Sounds like a reasonable guess to me I agree the second Hulk movie didn't show Hulk at his higher power levels- I hated that he seemed to be tired at a couple points. The first Hulk movie came closer in the raw strength department I think. My guess is that the movie will mirror the Ultimates run fairly closely. Either way, I'm looking forward to the Avengers movie!
ps. Where is this new Thor trailer? I haven't seen one where he unleashes anything big.
He smashes the entire surounding landscape! but I think if Thor and Hulk do face off I dont think it will be as drastic as the Ultimate Avengers toon. I think it will be just a scuffle nothing more.