Because superhero villains are intelligent. [/sarcasm]
The OP assumes real world, or at least that is what I got from his post.
IRL, Batman would be an ignorant fool and would probably be shot by the cops for being a petty vigilante who kills people without proper motive or proof, based solely on hearsay that the author of the comic wishes to be true. Iron Man's suit wouldn't function IRL at all, and Superman would be a powerless ninny running around in spandex who would soon be locked up in a mental hospital.





