I think that the regular Superstar Saga game and Bowser's Minions contradict each other. For example, near the end of the game, when the minions were captured Bowletta and Fawful, Mario and Luigi were seen as being in the room that precedes the throne room, which happens after Fawful was knocked out of Bowser's Castle. However, we see Fawful like nothing happened to him. Additionally, how did Bowletta go back to the throne room so fast? I could go on, but I believe that you get the point.