Skeeuk:
Since you go and check out industry reviews it means you care. Metacritic aggregates the scores from a ton of publications and calculates a weighted mean value. They do not give scores themselves unless the review has no score (very rare if at all possible for games), in which case they give it one based on the said review. There is no mentioning of A, AAA, BBB, DDD-, WOOT, WTF or any other such lettered categorization of games on the whole site. There are 3 colours and some icons to help the reader get a first glance idea. Luckily, the site provides links to the articles where possible, a summary, and the grade that each game received in each review.
There is be only one problem with the score calculation, and that is the weight that they give each reviewer/publication/site, which they do not disclose.
Other than that, the score is just an industry wide median. So practically, their own weight in the final score is possibly 5% if that.
It's unfair to bash someone for something they are not responsible for.
Edit: removed some bad textures, aplied AA.
