I thought Superman was a lame, invicible boyscout and everyone wanted to be Batman cause he's so much cooler?
Considering their powers though, you could accomplish much more as Supes in one day, than Batman, even if Bats is cooler
With Supes powers you could clean up all muslims and negroids from earth within one day.
As Batman it would be more time-consuming, he'd have to grab a bomb, hijack an airplane in Malaysia etc...
Oh wait... it was BATMAN who took that plane!