At last. I have reached the end of these comparisons as I get into the last 2 episodes of each season. I will do Party of One Vs. Canterlot Wedding Part 1 first and right after in the same post will be Best Night Ever Vs. Canterlot Wedding Part 2
In terms of similarties there is at least one major one. They're both written by Megan McCarthy. And they both center around a social event. Though it'd be an understatement to say a birthday party doesn't have as many participating as a Royal Wedding. Both episodes also have the central character make assumptions. Big difference of course being that Twilight was right. They also both have a song played within the first 5 minutes of the episode. Though I'm going to make it clear that B.B.F.F.F. trumps Singing Telegram for a couple of reasons but there's a personal huge reason I'll get into. Other then that not too much else. It's a single episode against an episode that's continued on from the next one.
Party of One is such a fun episode. Starting right off with a Pinkie song and getting into a party for her pet Gummy which after some suspicions and miscommunication almost leads Pinkie to replacing her friends with Inanimate Objects. It's going to be a fun ride to watch any time it leads to that. For some, this may be the one episode that finally had Pinkie grow on them. Because be honest, some people were going to be initially annoyed with her because she's the crazy character. However it's this episode that makes her different from others like her. This one episode mader her all the difference between her and someone like Spongebob (Who has also had inanimate objects as friends but only after wanting to stay inside forever instead of what with Pinkie who thought her friends didn't like her anymore.). The Main 6, Spike, and Gummy have a nice little party and after they're done. One of the 6 suggests that they do one soon. Though the driving point of the episode begins when Pinkie asks them to go to an after Birthday Party the very day after. So she sets out to invite everyone once again. But this time they all decline with simple reasons. Twilight needed to Study, Applejack to...buck apples (She's the element of Honesty, so she has a harder time lying after all), Rarity has to clean her (purposely) dirty mane, and Rainbow Dash & Fluttershy have to help a bear move. When Fluttershy thinks it over she sees them for what they are: Excuses. Making her more suspicious is Twilight sneaking up to Sugarcube Corner to receive a package from the Cakes. Pinkie listens in via a Can phone and overhears Twi saying she doesn't want Pinkie to know about this. Setting off a package exchange between the rest of the Main 6 as Pinkie follows. Twilight to Rarity to Fluttershy to Rainbow. When Rainbow receives it she notices Pinkie but then starts running setting off a very similar chase to the one in Griffon the Brush-Off only with an angry Pinkie (Her appearance inside the bell was kinda creepy) and the chase ends as Rainbow makes it to the barn. Where one of the most hilarious moments of the series play as Applejack and Pinkie have a stare down. AJ trying all she can as hard as it is to deceive for her. Pinkie Pie eventually leaves but she's still suspicious as all heck. So she interrogates the one person she knows could possibly help: Spike. By tempting him with gems she asks him to talk. (This is a particular silly scene) However she turns out to be too forceful and Spike just says what Pinkie tells him to tell her. Which might come as a jab to interrogation. Thus Pinkie Pie turns sad, made more visually with Pinkie's poofy mane becoming straight. A
commercial break moment later she's talking to Inanimate Objects and making them speak. It's all so funny and insane. Rainbow Dash comes by to get Pinkie to the Barn, but as Pinkie believes her friends have abandoned her she refuses. But Rainbow Dash being the Element of Loyalty won't back down to get her friend and she literally drags Pinkie all the way there. What I like about the barn scene is that Pinkie doesn't immediately go back to normal as soon as it's shown it's her Birthday Party she thinks it's a farewell party until they point out how that can't be and Pinkie returns to her happy self. Overall Party of one is a great episode. Among the Top 10 of Season one for sure. There is one little minor problem I want to say first. Besides the very beginning and the Cakes appearing later on. Ponyville seems like a ghost town. Like nobody else is there except for the Main 6. It's nothing too bad, but it just seems odd to me anyway. But yes. Party of One, great episode.
Now for Part 1 of Canterlot Wedding. I just want to take this moment to say that I absolutely
loved the Season 2 Finale. It was absolutely amazing and totally blew my expectations. Everything overall was just wonderful and it made sure Season 2 ended with a bang. Starting with a picnic, Spike gives the Main 6 a letter about the Royal Wedding. Telling that Celestia has assigned each of them big parts in setting up the whole thing. Rarity is more excited then anyone else during this as she's told that she will design the Wedding dresses. And Rainbow is all ears when she's asked to perform a Sonic Rainboom. However Spike didn't give Twi the message that told who was getting married first. Which happens to be Princess Mi Amore Cadenza and... her brother Shining Armor. Now I know what some of you were or are thinking still. How come if her brother was so important to her, why did she never mention him before. Unfortunately there is no easy way to answer that. As yes Shining Armor probably wasn't planned originally back when Season 1 was getting started. But it has to be made clear that it wasn't Executive Meddling that forced Twilight to suddenly have a brother and by extension a foalsitter like Cadence. As Lauren Faust herself helped with the Season 2 Finale. I'll get into more of this a little later but the first came of course perhaps a huge reason why I like Shinining Armor: The B.B.F.F.F. song. It was a very sweet song to hear, though even though it's sung by Twilight not really one of my favorites regarding the song itself. But what I found more special what was shown in the meantime. If you saw my thing for Cutie Mark Chronicles you'll know exactly what.
THAT'S RIGHT! FILLY TWILIGHT!.....ahem....
But yes anything with Filly Twilight's going to touch a soft spot. I just can't help it. To quote Fluttershy, she's just. so.
cute. And by extension it makes me like Shining Armor because anyone that made Twilight as a filly smile like the previous picture is going to be in my good graces. Not having enough development time be damned. Anyway, Twilight is ticked at her brother for not even telling her he was getting married earlier and not personally and rather through paper. (Which I imagine these days it'd be like learning your brother was getting married by him texting you or through E-Mail). So Twilight's looking distraught while the rest are high anticipating the wedding. So they catch the ride to Canterlot covered by a huge bubble shield that Shining Armor created just for this event. She gives Shining a piece of her mind and he explains that some threat is lurking around. And that's why security measures have been put at it's height. Shining apologizes but tells Twi she's welcome to be Best Mare, which she gladly accepts. She's still a little tipped off on supposedly not knowing Mi Amore Cadenza but Shining tells she is Cadence her ol' Foalsitter. Which once again we get...
MORE FILLY TWILIGHT!...ok sorry. No more of that.
Which we are shown that Cadence was a very sweet foalsitter and has the ability to amplify love where it existed. Where we are shown making an arguing couple happy again (Bonus points for it having Sibsy's OC). The Swing set and the Picnic Cadence with Filly Twilight was all that was needed to endear her to me. And it gives more stuff to the fact that what we think is Cadence acting like a Bridezilla. Which leads to separate scenes with most of the Main Cast where she does something rather rude or demanding making Twilight all the more angry. Rejecting AJ's Food, telling Rarity to redo the dresses, Making fun of Pinkie's Party (Not that she noticed), etc. At the table Twilight tells her friend of her suspicions, but her friends think she's overreacting and being a little protective of her brother. Twilight goes to see Shining but before she can start talking Cadence gets a hold of Shining first and uses some freaky magic on him. Which makes Twilight believe she's using mind control. and that Cadence is also evil. She runs off to tell the rest of the Main 6 but they're too excited about being the new Bridesmaids to listen properly. Twilight once again finds herself alone, . But we switch to a rehearsal of the Wedding being made hosted by Celestia. Twilight comes barging in with her accusations, and Cadence acts upset and cries off. And at that moment everything turns upside down for Twilight. She's heavily scolded by her brother, told she's no longer Best Mare, Abandoned by her friends, Most heartbreaking to her seemed to be Celestia's words though. This scene is just... emotional. It tugs at your heart, but I find that a good thing. If something gives you an emotional response I think that's a huge credit to the quality of the scene. And as heartbreaking the scene is with an added scene where Twilight reprises B.B.F.F.F. while crying on the steps... (*sniff*

*sniff*) it's as emotional any scene can get in the entire series. Then Cadence comes in, and Twilight aplogizes. But then a shocker happens. She says "You will be..." with an evil look as she
drags Twilight underground with what looks like a magic spell that's taking her to the fiery depths of hell. Like... who in the f
(BUY SOME APPLES)k saw that coming. I sure didn't. It was far more dramatic then the cliffhangars in either Return of Harmony and in the Pilot. Because do you know what kind of crazy theories would be going on if they had decided to split the Royal Wedding to 2 different weeks rather then air both on the same day? Everyone would be like "NO TWILIGHT D':" and it would be just buzzing with what's up with Cadence. In some ways I kinda wished it had done it. I'll explain it really soon in the following paragraph but for now. The first part is just amazing for having alot going for it. And it got me hyped for the following 2nd part after it which would only air a commerical break after.
This is actually a very easy decision. Canterlot Wedding, Part 1 wins. You may accuse it because it happens to have not only Twilight but scenes with Filly Twilight as the sole reason. But there's more to it and that. Party of One was an excellent episode. One of the best Season 1 had to offer. But for the most part the biggest thing it had going for it is Humor. Part 1 of Canterlot Wedding wasn't nearly as funny but it's far above Party of One in one thing: Emotion and Drama. The scene where Pinkie gets her hair straight is sad, but I get more "feels" from the scene where Twilight is abandoned and left alone on the stairs then the small scene where Pinkie is sad and the next moment it goes to a humor scene with her going psycho and talking to Inanimate Objects. Also as to getting into why I kinda actually would of liked if they split it. There's another show that I enjoy, perhaps even more then Friendship is Magic called Avatar: The Last Airbender. It had dramatic cliffhangers that led to something in the next episode that we had to wait a week for to see alot. And while Canterlot Wedding Part 1 probably doesn't exactly reach to that level it would be the closest FiM got to something as epic as as one of those. I would of gone "NO TWILIGHT D:" for most of the week but it would of also made great suspense to wait. But having it only about a few minutes later didn't hurt at all. I think anyone would be surprised to see a My Little Pony show to see a pony get essentially dragged into the fiery depths of hell if you didn't see the context or what came after it. Party of One was amazing but it just can't beat the fact that this centers around my favorite pony, has Filly Twilight, has heartbreaking but great emotional scenes, and a surprising end. This one goes to Season 2.
Season 1: 9
Season 2: 16