Can someone explain to me Gamespot's Nintendo hate?

[Dusk]

Samus Aran said:

Dusk said:

Which ones? 3/4 are released so far. In another day Kirby will be and the average for it at this point is 7.5ish. 

Yoshi's Island is one I think. Wasn't made by Nintendo anyway.

Yeah, I get that. Just seems odd to say what a game is entirely deserving before it comes out. GS has the second lowest review score of Kirby (5/10) so far and the video I watched on Giant Bomb (4/10) actually made me think, 'man they suck at this game' and 'wow I want to buy this game right now' lol. Of course this is assumption it's Kirby that he/she is referring to.