Sales Predictions for Call of Duty: Modern Warfare 2

[sc94597]

HappyPerson14 said:
9 million for 360, 6 million for ps3, 0.05 million for wii

If it was to release on the Wii, and we assume that it will be better than Call of Duty: WaW due to the developer, why would it sell less than Call of Duty:WaW? Also not only less, but less than half of Call of Duty:WaW's lifetime sales.