No way. Superman is just too corny. He'll always have his place as an American icon, and as the first real superhero, but he's just too friggin corny. Batman's character is much more complex and much better thought through. I'm sorry, even in the universe of DC comics, I still have trouble believing a character that has cold-breath, X-ray eyes, and heat-vision because of the "yellow" sun rays. That might not have mattered in 1938, but everything about his character, from the cheesy, nonsensical superpowers to his poorly conceived origin just makes him VERY dated IMO. Nevermind that all he needs to do to conceal his identity is put on glasses. I'm sorry, but Batman is just a better character in every way shape and form. And don't even get me started on Batman's comics vs Superman's... Supes' rogue's gallery doesn't even remotely compare to Bats'. Of course, it's all subjective, and this is just my opinion. The truth is, in terms of status as fictional icons and truly enduring characters, they're really equals. I don't think you could really make a strong case for either being "better" than the other. I just prefer the world's greatest detective who kicks the **** out of bad guys with his fists and his brain to the alien that simply has too many superpowers.
But I digress. This thread isn't about Superman or Batman; it's about the Joker. Personally, I absolutely love the idea of the Joker being physically imposing, and not at all afraid to throw-down. Remember, isn't Joker supposed to be like 6'5 in the comics? I'd love to see Joker team up with Scarecrow at the beginning of the film and then just beat the living **** out of him like he did Knightfall. Of course, in a fair fight, the world-class martial artist would mop the floor with the Joker, but that doesn't mean Joker can't get in a few good solid hits on Bats with a crowbar, or the increasingly popular sledge hammer.