So hilarious certain posters predictably do this over and over. Picking among the worst review out of dozens and dozens, and then basing one's entire opinion around it.
What about GT's 8.6, or Videogamer's 8? CVG's 8? IGN's 7.9? There's a reason the game's average score is above 70 and not 50. It seems to be a very divisive game, which means you ought to look at it from the perspective of what you yourself are looking for in a racer based on the commentary, not just a review score itself. For example, are things like track based racing, lack of driving lines and rewind options, aggressive AI etc things that really put you off? If so, this might not be for you, if however they're not, then look at the other reviews that took less of an issue with these things.