I never miss a chance to spew my chief complaint about Metacritic: they turn everything into an X/100 review. And that's just not sensible. A publication might use that review scale, and that's fine. Or they might use X/10, which isn't quite the same, but close enough that it doesn't bother me much. But what if they use X/5? Or what if they use a 4 star ranking system? In these various systems, a game that they would all describe as 'nearly perfect' might get a 95%, a 9/10, a 4/5, and 3 stars. That parses fine if you're an intelligent human being looking at it. But Metacritic will blindly turn those scores into 95, 90, 80, and 75. And then average them and say the game is an 85. And that's just not accurate, if all of those reviews intended to convey the original idea of 'nearly perfect'. Most people used to game review numbers will interpret an 85 as something like 'decent with minor flaws'.
It's just inaccurate and mathematically annoying. If I ever start a game review site, I'm going to review games on a scale of 1 to 137 just to screw with them.