I've watched superman films. SR is not too too different, and so I voted BB. Plus Batman is a far more complex character and thus is more engaging.

In terms of Superman, my biggest grip with him is that he's essentially near omnipotent in the comics. In the movies, is he a weakened copy of his normal self? He had problems stopping a plane from crashing (he had to strain himself), and then later he throws a much larger (mass-wise) object into outer space with non-congruent effort. So is Superman weaker or stronger than he needs to be depending on what the narrative needs? I'm confused.

Batman is incapable of letter the writers mess with narration in such a fashion, so I prefer him. Also, and off topic, Batman has defeated Superman several times in the comic, even though I disagree with the hows.