OP, I don't understand your point. 100 Million last generation would mean losing to the PS2. 100 Million this generation, when the gaming market has grown significantly, will mean losing badly. The Wii will be at 70-80 million by this time next year, which is the absolute earliest Natal could possibly launch.
Wii has more 20 million sellers than PS3 has 5 million sellers.
Acolyte of Disruption