I say PS3 big in america has a better chance.
I just don't see the 360 selling 40-50k a week like the Wii did.
it'll have it's odd 10-20k a week ONCE, but never to 30-50.
also, the 360 was out for 2 years in japan and costs 2x less than PS3 and almost equivalent to Wii and yet it can't muster 40-50k on avg which the Wii can.