Edge gave MGS2 and MGS3 an 8. Being that MGS4 still holds true to what was good and bad of the previous games (minus controls), I wouldn't expect much of a change from reviews of previous MGS games.
AKA: playstation magazines = 9 or over
Edge and Eurogamer = 8/10
and IGN, gamepro = 9.5 or higher.
Who has a scan and does it have spoilers?