I think the PSP should be on there, it appears to have lost all momentum.... DQ9 will be the nail in the coffin.
Also, Banjo is the flopzilla of software. Even at a bargain price its sales suck hard.
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