I think that Mama Robotik post was harsh, People have kneejerk reaction on the forum.
Im pretty sure if any popular game on gaf with a huge fanbase like HL3 or Nintendo games will get a surprisingly score and the review content is different compared to what we read from other users impression, its bound for some people to not take the review seriously.
Imo two things people wont see -
1 - Some users had played the game just when reviews started to appear since game was leaked early.
2 - Uncharted 3 haters were dismissing all other reviews apart from EG when even they didnt play the game