xbox

wii

PS3

It already has about a 2 million head start.

lol Lost Odyssey could not sell more than 800k copies, what makes you think x360 will outsell the ps3 version....
a lot has happened since the release of GTA4, Games actually sell a lot better on PS34 now, and FF XIII will do very well, as already proved by Japan despite it's install base it had a huge attach rate lol, plus the fact that x360 users tend to prefer games like GTA, ME2, Halo, I think we all know where this one in going...

Hard to say, its not like one of the versions already sold 1.9 million...

Dreamcast

ps3 no doubts. Irrespective of install base. Especially with 1.8 million headstart in Japan.

GTA IV didn't have the advantage of being exclusive to PS3 in Japan - that seals the deal of WW sales.

Due to exclusive TV advertising (so far as I can see) in US and UK, 360 may outsell PS3 there, although this time, given the genre, that's far from certain.

GTAIV was a good fit for 360 demographics and had exclusive DLC, too. FFXIII has nothing to separate it from PS3 version apart from the advertising and a higher install base in US and is arguably, be genre, of far less interest to the majority of 360 owners vs PS3 owners.

For the 100th time...

P-S-3

ps3 has more preorders even in NA!