Gamespot Platform awards are weird when comparing to sales.

[Simulacrum]

Best Wii game - 

Dead Space Extraction

Best Ps3 game -

Demon's Souls

Best Xbox 360 game -

Assassin's Creed 2

Best Ds and PSP game -

Gta Chinatown Wars.

 

http://www.gamespot.com/best-of/platform-awards/index.html?page=7

 

Now if these were best games on each platform,how come every one expect Assassin's Creed 2 got pretty low sales?