I wouldn't say it's any more biased than anything else they do for AAA industry titles. Yeah it's stupid that they post that many videos up for one game, but I really don't expect much else from Gamestop. They will continue to spam whatever is popular at the moment and what will get them more internet traffic and more money. It's not CoD that's at fault. Blizzard will probably have their videos spammed when Diablo 3 approaches launch, and the Wii U will probably have the same done to it, unless Gamestop really is biased.
That said I will add that just because the game is popular doesn't mean it's a good game. I wouldn't say CoD is bad, it's just generic or mediocre like most of the other FPS series. I can understand that some people prefer the series over other FPS series and that's fine. Go with what you like and have at it. However, it seems like every new installment of these FPS franchises are little more than expensive expansion packs. They make new multiplayer maps and make some gameplay changes and there's some story mode tacked on. It seems like a disservice to the fans to just crank out another game that offer anything drastically different and still charge them $60. I may not think much of the game but I think the fans deserve more or at least need to have a more reasonable price for their line of sequels.
