I have my own prediction! You'll be the next BHR-3!
That Kinect prediction was pure luck. Just look at BHR-3. He made one lucky prediction about Uncharted 2. Then his next ones weren't so accurate. I'm not saying it won't happen, but don't think you're some God-like predictor or anything like that if it does happen. You just get lucky sometimes and sometimes you don't.
Gears of War 3 can do 7 - 8million, but I doubt it'll reach 10m for the fact that it's not as accessible as a game like COD or Halo.
- Gears of War is a very hardcore shooter. You ever tried going online. You'll get slaughtered unless you're a pro.
- You also have to consider the fact that it's a third-person shooter. TPS are not as popular as FPS these days.
- It would have to sell like Halo 3 / Reach for that to happen and I don't see that happening.
Well, that's my prediction at least. I see it doing 7.8m. Again I'm not saying it won't happen. It could very reach that milestone and I'd be very happen for it. But if it does, don't think you're special for guessing and getting lucky. Because quite frankly, that evidence in your OP is no hard data or anything like that. I see it being another BHR-3 situation.
Good Luck though!