I think it all depends on how it was written, really. If the screenplay (story) was composed in a rather straightforward manner, then that gives a little more credence to the editing. It poses questions, and then gives the answers, really taking advantage of the medium of film. Then again, I haven't seen Hulk yet, but will in the next couple weeks, so I can't compare the two films just yet. For me, though, the editing is the one main way in which 21 Grams truly excelled. It got my vote here.