I agree with Minsc that in motion the effect will probably be highly diminished, but something is absolutely off with those screenshots. Then again, there's an high level of subjectivity in the perception of digital images, but in stills, for me, TW2 is one of the most lifeless games of the last years. It's way, way, way too clean. I hope there's the option to apply some filters to "dirty" the image a bit.
And then again, looking at those images, something is dramatically off in the texturework. I think that's half the reason it feels so unnatural.
http://img153.imageshack.us/img153/3360/witcher2201105161414018.jpg
Look at this shot. You got character models that have textures detailing the sewing of the clothing, and they're running on a bridge that is made of zoomed up wood (by the proportions of the veins in the log, that bridge should be 50 cm wide, not 5 meters). And those characters next to the ground and wall textures... how do they even mix? They don't seem to belong to the same game.
http://img151.imageshack.us/img151/2613/witcher2201105161343492.jpg
Now look at this screen: bars are perfect, walls are great, Geralt looks fine, what's up with the guards and their tunics?
http://img836.imageshack.us/img836/6186/witcher2201105161413107.jpg
Look at this one. It's hard to point the finger at the individual elements that don't mix, but don't tell me this shot looks natural. It's incredibly artificial. I happen to craft fantasy dioramas as an hobby, and maybe that makes me biased, but it really looks like a miniature.