No one knows said:
I don't know why, but I've never really liked Superman, most likely because he was so overpowered. However, Batman is awesome, not the most powerful of course, but he's the most awesome. Also, there was this (non-canon) time where Batman killed Superman.
*Cough* When? I may be missing one.
Red Son: Batman overpowers Superman using red sun lamps. Is beaten by Wonder Woman.
The Dark Knight Returns: Batman lays the smack down on him using a variety of tricks including kryptonite, then 'dies' of a heart attack.
Hush: Batman uses every trick in the book to not die for about 3 minutes.