Bundling helps them sell consoles yes, but they have already eaten a lot of losses from their first party studios. Im not saying they won't sell, but I thought it would be good to consider the situation they have to fix next year.
One things for sure, its better to have one Halo 3/or Gears of War 2 sized first party game than to have 4-5 1-1.5 million selling titles. Once you make the money back on development, any money over that is simply a huge bonus if you can keep selling millions after that break even point.
Heres hoping KZ2 matches Gears as a franchise!
Tease.