From what I've seen till now (played GoW3 finally for the first time today) and I'm up to the "demo" level (city of olympia):
Character models and animation are level above anything else including Uncharted. The Gods and Kratos are mindblowing. The whole game really does look like living painting, I can't see any other title getting close to it for some time, one thing is to look at pictures (those first two look like old build tbh), other is to see it in motion. Uncharted 2 has great art style, but comparing it to God of War 3 is like comparing comic ilustration to the work of Rubens (style wise, both games are very impressive from technical standpoint). GoW3 is not very strong on textures, that's where UC2 has no equal amongst any other game.