I'm with Nerys Myk. These aren't wrestlers putting on an exhibition, they're crimefighters and rescuers who use their powers to help people. I think The Avengers (the film) got it absolutely right. Tony Stark and Steve Rogers were butting heads incessantly, their personalities clashing, but as soon as people were in danger, they both immediately put that aside and had no trouble working together as a team. And that's what made them heroes. Helping people came first, always, automatically.