Kantor on 25 July 2009
Not a lot, it would appear. Some highly reviewed gems like Ico, Shadow of the Colossus, Okami and Valkyria Chronicles haven't crossed 2 million (or in some cases, even one million), while Carnival Games, with its awful reviews, sailed past 3 million. Halo 3 has lower reviews than BioShock and LittleBigPlanet (okay, roughly the same) and has sold more than double both of them PUT TOGETHER.
It's a factor, yes, but brand name, marketing, install base, console, genre and word of mouth are all far more important.
(Former) Lead Moderator and (Eternal) VGC Detective 
