I honestly See the Console wars happening like this-
PS3- very similar to Sega Genesis(except the markets are larger now) strong NA and Europe presence, Japan as weak point. Low software compared to HW
360- N64 esque(closest I could come up with) Great NA sales, then good others sales(I would add Japans to others)
Wii- It really will not compare to other consoles. it will chart it own path... closest thing I can think of is the DS... But the Wii has started faster than that...
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