Zeronet, the problem with FF is that it looks like CG. The pic you posted is a still, not the animation they used in the move. The animation was rather stilted in some places (though in some places it was really good. Mostly long shots). I'm not saying it wasn't gorgeous, or that it wasn't incredible. Venom gave a great example of some of the better stuff in the movie.
On the other hand, Nemo is cartoony and silly, yes, but the animation quality is top notch all the way through. Is it realistic? No, not at all (except in the water effects, which I've already mentioned).
You're entitled to your opinion, I just disagree with you on aesthetic and technical grounds.