Nah I'm keeping my expectations in check for the Halo CEA remake. I do think it will be hugely successful and all but I think it could be as low as 4 million LT. I think it'll be more like 5 million but it could be less.
Not counting bundled games like Kinect Adventures the highest selling 2 exclusives for 2011 will be Pokemon and Gears of War 3.