The animation of messi showed in the teaser is indeed the same as the gameplay, however the animation in PES2011 is way better than Fifa10/World Cup, its because Fifa is soulless e.g. it feels empty and cartoonish. When you play PES2011 it feels real individualty of each player is much improved than PES2010, messi animations in PES2011 is also better than 2010. Let me give you a situation I was in when playing PES2011, I did some tricks and it was quite difficult to go trough defenders and tricks animation are also very smooth and attractive/realistic.( almost as good as fifa or even better). Hopefully ill play fifa 11 and the new version of PES2011, as the one I played had small differces of PES2010. I would not be suprised if PES2011 outperformed Fifa 11 but its way too early to judge as I didnt even play fifa 11 yet.
Edit: I would say that Konami is going to right direction. Personally I see them as the 2K Sports of soccer in the future, unless EA step their game up.