They will both make it
reason:
As prices drop sales drasticly rise, therefore I expect the Xbox 360 to be at $199.99 next year, and outsell the ps3 until sony drops to $299.99. The wii is a monster in sales, dunno whats going to happen in the long term though.
2008 end of year predictions:
PS3: 22M
360: 25M
wii: 40M