Another theory that I have long been a subscriber to... The Joker is simply smarter than Batman. That is what makes him such a brilliant adversary. Add this to the fact that Batman, at his core, uses logic to defeat his opponents and The Joker works on a level above and beyond logic. Indeed, the best Batman/Joker stories are the ones in which Batman plays catch up to his rival. As for the Superman fight, I enjoyed it. Using the anti-Superman suit was a wise idea, story wise. I actually thought Batman was spitting at The Joker's suggestion he beg rather than the Kryptonite gum. I did like the answer to who will win in a fight between them. Another brilliant issue. While I'm not a massive fan of the new 52, it's use of The Joker so far has been exceptional.