Metacritic has told CVG that it has been forced to de-list a games publication from its review listings after uncovering "corrupt practices".
Must be Bioware. They give a 10/10 for their game Dragon Age II and 0/10 for their competitor's The Witcher 2
BioWare are not reviewers. The one you speak of is a ONE employee (not the whole company) who wrote "user reviews", not professional reviews that are included in the average, which the article speaks about.
N4G is a community of gamers posting and discussing the latest game news. It’s part of NewsBoiler, a network of social news sites covering today’s pop culture.