Halo 3 ODST vs Gran Turismo 5

[Squilliam]

I think in terms of first week: Halo 3 -> Halo: ODST -> GT5.

I think in terms of life to date: Halo 3 -> GT5 -> Halo: ODST

I think the total LTD numbers will be: Halo 3: 11-12M, GT5 9-10M, Halo: ODST: 7-8M