The Academy, as a single entity, may want to appeal to popular movies to get ratings... but individually, people don't take that into consideration. No one for a movie just because they want the telecast to be big. They vote for what spoke to them emotionally, they vote for their friends, and they vote for themselves. I don't think DH2 has enough love to snag the required 5 percent of #1 votes.
In fact, I think no matter how stodgy/arty/whatever the nominations are this year, already the Oscars will gain more interest simply because of the Ratner/Eddie Murphy fallout and the return of Billy Crystal.