Well, I think the game has a shot to be the best graphically in its own genre (RPG or whatever you call that kind of game nowadays - i.e. Cut-Scene Filled Archaic Battle Systems Adventure Games - CSFABSAG). But I'm not saying this because of the scans, as they are mightly blurry and in no way represent the end result. I'm saying it will because the KH team has a really good track record when it comes to visuals, and I don't see how Versus can realistically diverge from that route.
That being said, Final Fantasy XIII is indeed a graphics king in its own game genre. Sharing the cup only with Mass Effect 2.