Whilst there are exceptions and outliers with games which have been reviewed too favourably or too harshy the general statement remains true that a higher rated game is generally better than a lower rated game.
Take the Top 10 Xbox 360 games, then compare them to the next 10 down. The games at the very top outsell the games lower down substantially so by that metric they are better.
Taking a group of the top rated metacritic games reduces the outlier factor and so does taking a group of reviewers and averaging out the scores reduces the human factor which you can get when comparing game reviews from a single site.
Tease.







