Although I believe these two would realize there is more benefit in joining forces than fighting...
Batman in nearly every aspect
More interesting as a hero/character
Better Male/Female Characters
Rather than just relying on superpowers he uses his detective/combat skills, his wits and fear to fight crime
Has beaten/outsmarted Superman on many occasions and he knows Superman's weakness, which also gives him an edge in a fight.
Granted, Superman actually has superpowers....but Superman imo is over powered, uninteresting and just not as cool. Plus his idea of a disguise is to put on a pair of glasses...if that doesn't say something for his brain and the brains of those around him (considering none of them have figured it out without being told) says something.
Not that Batman isn't without his own inconsistencies and plot-holes (I mean seriously a superhero with advanced tech and gadgets and no one suspects the richest man in the city?), but IMO he's the superior character.
Edited by GI-JOE, 12 September 2014 - 01:44 AM.