I think a lot of this depends on the marketing push for Mass Effect. The guys at Bioware have said that MS intends to go all-out with the promotion for the game and push it out there with a Gears of War style ad campaign. If you'll recall, there was a number of outstanding TV ads for Gears last year around the holidays and I believe that was a direct contributor to the the console itself selling hot, not just the game.
If Mass Effect is all over the media in the same way, and taking into mind the continual coverage of Halo that we're seeing, I would expect that the 360 could very well increase sales YOY.







