I think people are highly underestimating how much pull Ledger's death had to do with the insane numbers that TDK did. I love the movie as much as anyone else in this thread, but Ledger pulled in a huge amount of female audience that only wanted to see the movie because of him.
If it weren't for 3D for Avengers I would say DKR easily but 3D will boost the numbers. I think they'll wind up doing about the same WW, maybe DKR ahead by a bit. But not the slaughter that GAFers are predicting in this thread.
The fuck? You trolling, bro? I find it impossible that someone could claim to be a geek and not know of the Avengers. Even if you didn't know the name, people know the name Captain America, Hulk, Iron Man, or Thor. If you knew anything about them at all you knew they were on a super team.