All I know is that there is no way that there is any Wiis just laying around Japan... Nintendo knows what they are doing, I think they have a stockpile and they are releasing it slowly as they make shipments of WiiFit and SSBB... That is what I believe, disagree if you must.
End of 2009 Predictions (Set, January 1st 2009)
Wii- 72 million 3rd Year Peak, better slate of releases
360- 37 million Should trend down slightly after 3rd year peak
PS3- 29 million Sales should pick up next year, 3rd year peak and price cut