All mainstream gaming journalism is awful, because people are scared to upset over-obsessed fans of certain franchises (either gamespot or IGN got heavily attacked because they gave GTA5 the horrible score... of 9.5/10!) This also means that they're going to be bias towards certain franchises and against others. An example of this is probably
Skyrim. Now; Skyrim is a great game and deserves good reviews; but I'm sorry, at launch it did not deserve 9.5/10 - no bethesda game does, because of the guaranteed continual glitches. The answer is to actually read what reviews say and don't just go "IGN rates that a 9; so it must be good! Gamespot gave this a six though; so it'll be crap!". The fact that you really only have 3 or 4 numbers that mean anything doesn't really help - anything below seven is probably not worth your time, apart from you can't say that because more than a few actually really good games were given really bad reviews by mainstream sites because reasons.
To use a very old example;
Gamespot rated Ultima IX 6.4 back in 1999; yet Ultima IX is no joke the worst game ever and a completely insulting end to the best RPG series ever made!
tl;dr: If you're not sure about a game; wait until steam sell it for ?5.00 a year after release; and then buy it and if you don't like it; its only cost you a fiver, and not a bajillion quid!