Well it's a difference in being more subjective and/or objective with a review. If you have people who are in need of games, then a lot of people will go out of their way to oversell it to make them feel better about their purchases; like a justification. I'm not saying there is anything wrong with liking a game, but sometimes when I see people really aggressive about a review, it stems from that mind set of justifying a purchase.
Just how I see it. Happens all all platforms too.
https://www.trueachievements.com/gamercards/SliferCynDelta.png%5B/IMG%5D">https://www.trueachievements.com/gamer/SliferCynDelta"><img src="https://www.trueachievements.com/gamercards/SliferCynDelta.png








