NSY said:
To be honest, you can't really say a game is best just because your favorite character shows up a lot.
Yes I can, if they're my favourite character
because they make games better thanks to their personality and the dialogue and plot points it generates.
For example, Fawful's dialogue is a huge part of the charm of
M&L:SS - without him, it wouldn't be as good a game, and same with
M&L:BIS. Similarly, Bowser getting the starring role in
BIS allowed for vastly different scenarios than the other
M&L games, since instead of silent protagonists who do the right thing because it's the right thing to do, you're also playing as a grumpy, delusional, boastful villain motivated by rage, greed and pride; it's no question which role's gonna be more interesting. Admittedly,
SPM didn't make use of Bowser as well as
BIS did, but his dialogue was still entertaining, and I absolutely loved
Peach's reaction to his heroic sacrifice, which wouldn't have been nearly as interesting if it had been over anyone else.