It is very suspect that four people would give any game a perfect score but I guess they are a closed loop of opinions. Even thoughbit is suspicious after playing the game for 60 odd hours I can see why they rated it all 10s. It's a 10 and then some. Such a massively underrated game.
Eh... I mean there are at least 15 other outlets that gave it a perfect score, so it doesn't seem completely out of the question. Unlikely, yes, but not quite enough to draw any conclusion imo.