PAL will not have a "huge" drop. I mean I expect at least a 50-60% drop there. It is basically its first week in the Netherlands, and it is in Spain.
I am gonna say final sales will be-
180k in Others
110k in US
60k in Japan
350k second week... huge drop. But still good sales.
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