While I think Aurora definitely cast a pall over the film and, understandably, the cultural conversation was more about the shooting than a new film. The film is doing well - by any standards, other than perhaps against TDK, AVENGERS and AVATAR, it's doing very well - ubt it's not permeating the collective consciousness the way TDK seemed to do.
Not sure if that's a villain issue or something else.
For my part, I know some of it that the lead up to this film was, IMSNHO, done very, very poorly. The amazingly brilliant viral/ARG campaign for TDK was, for me, a huge part of the anticipation and sense of shared "ownership" of the story. WB seemed a lot more complacent with this one.
I also think the film's refusal to ape TDK's tone and villain confused audiences. While reactions, outside of this thread, have been pretty positive with Joe and Jane Six Packs, I tend to think the film's heavy reliance on knowledge of BEGINS has had a muting effect on awareness, as compared to the nearly standalone TDK.