Hate the shit on the parade but Eurogamer gave MGS4 a 8/10.
http://www.eurogamer.net/article.php?article_id=143797&page=3
BeCAREFUL, there are spoilers in his review, but he doesn't really point out what his problems with the game were. Either way, he sounds pretty cranky towards it. I find it strange that Eurogamer let this guy review one of the biggest titles of the year, his only reviews are MarioKart Wii, ArmyofTwo and Pirates of the burning seas.