halo reach- 6 million first week?

[Dallinor]

That would be insane if it happened.

A 2.2 million jump over first week Halo 3 numbers. Smashing MW2's record on the 360 by over 1.1 million for launch week.

Does 3 million preorders usually translate into 4.5 million in sales? That's a 50% increase.