if next week black ops lowers halo reach's numbers to 100k and after that it sells on par with halo 3 with the two extra weeks it should get around 7.6mil. So it has a shot at 8mil for sure.

Halo is a Beast! Only beat by Cod this Gen.

If sales for this Black Friday match last Black Friday, and stay consistant for the rest of the year, it will hit 7.3 mill ish. But it has an extra 2 weeks before that, which is another 250 - 300k.

So 7.6 ish mill by end of year with no YoY gains.

Reach is seeing a bigger bump, earlier than Halo 3 received, and it needs around 400k extra. It's gonna be close, barring no adjustments it could just about do it.

 I don't think it will mostly due to CoD:BO now being out. But selling 6 million is bloody impressive in such a short amount of time. 

With GT5 out.. it has no chance..

..How does a racing simulator on a competitors console has any effect whatsoever on one of the most popular FPS franchises this gen..?

It's possible, but not probable. Never know though, some crazy sales are already starting early November.

Edit: Actually, looking at your numbers closer; it seems like a reachable goal.

Yes. Short of COD MW2 and Black ops, it will be the fastest selling 360 game ever. Plus i think it will have better legs than the 2.

I don't think so, but it could happen. Black Ops will drain it's holiday boost.

I has a chance of crackin 8 Mil because of Black Friday and of course the strong sales throughout the holidays but you definitely have to consider Black Ops as a big competitor which could potentially take sales from Halo Reach (meaning people could opt out to buy Black Ops only and not Halo Reach).