Alkamist-
The problems the reviewers most often run into is their own websites' hype of the games most prominent features. With the PS3 "graphical dominance" becoming such a ubiquitous term, it's such a nice crutch for reviewers and websites to cling to. The problem is that they have all these screenshots and video's saying "Oh this looks so great!", then they get their hands on the game and it doesn't live up to their own hype. They review it lower than the impression they gave, and the interwebs go nuts.
For my money, there are no differences. Nothing has blown my mind like Bioshock did (as my first current gen game), and I don't think anything will on a technical level. It's all about whether the particular art style works for you and the gameplay. Nothing else really matters.