Superman isn't allowed to win-- those are the idiotic rules. Hmm, Batman has Kryptonite in his costume-- why don't I just rub it all over myself? I'm not allowed to chuck a meteor at him from space or toss him with so many G's his body would turn to goo. I can't clap my hands together with enough force that the shockwaves shatters the suit or simply cave the entire building and cavern system down on him. And I'd be a bad, bad Superman if I used ANY super speed. Or heat vision. Or super breath. Or even a fraction of thought. No, that would be mean. The fight has to give the gajillions of bat-monkeys out there a reason to fork over cash over and over again. No, Superman is taking a dive.