The first one was just ok, but I enjoyed the second one a bit more. I could've done without the stereotypical spear-chucking Africans as well as the one-dimensional heroes: playboy Stark, jerk-off Pym, whiny Banner, etc. The animation was just ok with solid voice acting.
However, the plot was a bit more focused with plenty of action. There wasn't quite enough Hulk, but he was in time-out for smashing up the joint in the first movie.
I'm slightly positive towards this movie.