Worldwide comparison to last year:
14 December 2007
DS: 1515k
Wii: 678k
PSP: 654k
PS2: 568k
PS3: 544k
360: 513k
12 December 2008
DS: 1827k (+20%)
Wii: 1479k (+118%)
360: 740k (+44%)
PSP: 486k (-26%)
PS3: 416k (-24%)
Wii numbers are little silly, because this week was severely supply contrained in 2007 (the following week, 21 December, was one with monster supply). Pretty much the usual trend otherwise, Wii and 360 up year-on-year, the Playstation platforms down.
End of 2008 totals: Wii 42m, 360 24m, PS3 18.5m (made Jan. 4, 2008)