Well, because there is so much stuff going on, the voices kind of blend in. Dubstep sticks out more in the final battle sequence (but then it kind of breaks the fourth wall as well). The woodwinds actually make more of a statement than those, in the early scenes.
Love theme would be the second most prominent thing. A lot of sappy stuff in the film, so that gets it covered.
Oh and there is Oscorp material (basically the second track on the album) that comes back a lot.
EDIT: In the booklet Zimmer, Marr and Williams are all credited for Here song.
The dubstep doesn't really make much of an impression in the film, except for a few brief moments. The Aaron Copland theme is the most distinctive feature. Too bad it's almost always the same variation.