Actually, I bet Gears of War 2 will outsell GTAIV. It won't be that hard. Plus we are talking about JUST 360 sales, not GTAIV's total console sales of PS3 and 360 version.. If GTAIV sells the 9 million it is projected to sell, that means probably about 5 million of that will be 360 sales. Gears of War sold 5.16 million so far on the 360, and that was an original, while GTAIV was a sequel and had a good fan base built up. Gears of War now has that big fan base, plus many more 360's have been sold since then. I can almost guarantee that Gears of War 2 (if produced well) will outsell GTAIV on the 360 and will end up selling 6 million plus easily.