What's interesting about those review scores - the same case for most games - is how varied they are. Metro 2033 got varied scores too, personally I thought 2033 was one of the best PC games ever made and one of my favourites. What I have learnt over the years is no matter who writes these reviews (IGN, Eurogamer etc), it is still written by an individual human being with their own opinions. If i reviewed an RTS game, I would score it low cos I don't play or like RTS games, so no matter how unbiased I wanted to be when writing the review, I'm still going to struggle as I just don't enjoy those types of games.