Uh, I think people are overreacting a bit here. First off, it's two of the coolest and most iconic characters ever written (in my humble opinion, anyway) teaming up, so I'd say that's certainly worth giving it a chance, even if it DOES bend the rules a bit. Secondly, if this is set in the '30's, it makes perfect sense for Batman to be using guns - Doc Savage pre-dated Superman; his heyday was in the mid-'30's, so if this is set THEN, it's set quite literally before Batman even existed - he was created in '39, a year after Supes. Therefore, a Doc Savage/Batman crossover would HAVE to be set in the early, early days of Batman's career if it were to make any sense - and in those early days, Batman's violent pulp roots were still showing. He had a gatling gun mounted on the Batplane, for crying out loud. Third, it could, as several people have pointed out, very well be an impostor wearing the batsuit, and fourth, THE COMIC HASN'T EVEN COME OUT YET. We don't KNOW what the contect is, and it's not likely we'll find out until we read the actual comic, now is it? I mean, come on, DC knows what they're doing here. They've put up THESE PARTICULAR pages for preview because they know damned well that they're going to get a reaction. People are going to go 'GASP! GUNS! But Batman does not USE guns!', then go out and buy it in droves to see whether their hero has actually jumped the shark. It's the most provocative part of the issue, which is why it's here - if you let yourself be provoked before you've even properly read it, you're playing right into their hands. Be cool - wait and see.