Let's get this out of the way: TDKR is not winning Best Picture. There are too many "Oscar-Friendly" films coming out that have too much potential. One of them is bound to live-up to the hype and be the Oscar darling. I've seen The Master and its incredible. That or Lincoln will be a much easier pick for The Academy. Its nothing against TDKR. I love it and it'll probably be my personal favorite of the year, but this is not a good year for it's Oscar Chances.
For a comic book film to win Best Picture a lot of things need to happen:
1. The comic film has to have near universal acclaim.
2. It has to have someone the Academy respects attached to it.
3. It has to be a very weak year for films.
4. None of the "Oscar-Bait" films can live up to their hype.