Gran Turismo - 10.85million Halo: 6.43million
Gran Turismo 2- 9.37million Halo 2: 8.43million
Gran Turismo 3:A- Spec - 14.89million Halo 3: 11.10million
Gran Turismo 4 - 10.55million Halo3: ODST: 5.51million
Halo Wars: 1.90million
Halo 2 Multiplayer Map Pack: 0.68million
Total: 45.66million Total: 34.05million
Now, taking that into consideration do you think Halo Reach will outsell Gran Turismo 5?