The bigger franchise. How to tell?

[Kantor]

1) Is it really fair to give Halo 3's attach rate 2 years after its release?

2) You doubt GT5 will sell 7.5 million? Seriously? o_O

3) Halo 3 will definitely not stay at a 33% attach rate till the end of the generation- assuming a pessimistic 60 million sales of the 360 LT, Halo 3 would need to sell 20 million. Not happening.

EDIT: To sum it up, right conclusion, wrong methodology.