From the looks of it it is pretty much given that Gamespot which gave a poor preview of the game along with Bias Gametrailers and EDGE will give this game a low score
Give me a break. There is perhaps some validity in questioning Gamespots review based on who did the play test earlier. But thats not necessarily bias, thats a clueless reviewer.
But for Edge and Gametrailers, there is no bias.
Each magazine/site has several reviewers for a start, you cant refer to any one site or publication as a collective whole as even within them reviewers are going to have different opinions.
And at the end of the day, a review is that persons opinions and feelings towards the game. There is no single game that everyone will enjoy. GT5 is sure to get bad reviews, as long as the opinions in the review are justified by the reviewer they are entirely valid. So really, who cares? Some places are going to give GT5 a great score, some average and maybe one or two a bad review. Thats life, deal with it and move on. All that matters is that you enjoy the game, right?
Petty accusations of bias just because someone doesn't rate your favorite game is childish.