Not to bash but you really don't know what you're talking about do you?
Its about the games on the console. For the longest time GTA and SSB dominated the consoles then Halo came along.
Then Halo 2, and for the 360, Halo 3.
Take away Halo and what do you have? More sports and FPS games. 360 pretty much depends on Halo and GTA, without them do you honestly think half the people who own a 360 would have still got it? Halo might be a great game, but very over rated and not worth buying a console just to be able to play it.