Well I don't base any of my opinions of what other people think. And yeah, if I like something about the game, I'll buy it reguardless since I only read reviews to find out what cool things a game has in it. I really could not care less about its score.
I'm just using common sense. I didnt like MP Echos, so I'll wait for the word on this (not just one persons opinion) from people that played the game. Not reviewers or Nintendo fanboys, just normal gamers that can write a decent explanation about what a game is like.
Doing the same for Mario galaxy too.