The Prince Caspian spot was more or less nothing more than a shortened version of the theatrical trailer. And Aslan looks different. However, this could be because he was created by a different facility for the sequel. I was very disappointed that we didn't see more of that.
Also disappointing was no trailer of The Incredible Hulk, starring Edward Norton. With that said, I don't expect this CG Hulk to be as impressive as the one done back in 2003.