But as someone else in this thread pointed out, now you're talking about the minor, supporting characters. Furthermore, none of the other Avengers heroes or villains were as ridiculously overpowered as Superman is. Superman could have Batman behind bars before he even knew he was being moved. Avengers is simply far superior to any Justice League team DC could put forth because there is far more balance. The closest thing Avengers has to an overpowered character is the Hulk, but he's not terribly bright or ridiculously fast or can shoot lasers out his eyes like Superman so the character still works. I like Superman and I like Batman and I thought Man of Steel was a really good movie. But the idea of them co-existing side by side in a movie (or, even worse, fighting each other) is a recipe for disaster.