Japan: PS3 +1.5 million
US: 360 + 1 million
PAL: Equal?

So I think PS3 + 500k.

Answer 3: I think it will sell like 2 million+ in Japan alone
In the US: I doubt that 360 owners will be as into it as are the PS3 owners. Think about it, how close were the sales of GTA4, a western game exclusive to PS brand for 10 years, compared to the install base? ps3 sold nearly 1 in 3 whereas 360 was 1 in 5.

FF series is an even more historical PS brand game. FF fans buy Playstation, because they know playstation will have the next FF game.

There is such an effect like brand convergence, just like Wii owners buy the Wii for Mario and Wii games.
Support:
Call of Duty: World at War Activision Blizzard 4,372 N/A 4.19m 03rd Sep 08
Call of Duty: World at War Activision Blizzard 2,899 N/A 0.43m 14th Nov 08
Call of Duty: World at War Activision Blizzard 1,887 N/A 2.51m 03rd Sep 08

Xbox(&360) is the premier online/1st person shooter console (historically), and it is reflected in the sales of games that feature guns and online play.
PS(1,2,3) is the eclectic console (historically), and is reflected in the somewhat smaller sales of a variety of different genres.
Wii is the minigame console, and is reflected in the sales of quick play/variety games.

2M+ easily... 360 owners don't like rpg's!

And PS3 owners do? Please link me to the RPG that sold great on PS3. And I would add a J in front of RPG or your claim becomes ridiculous.

Well ... does WKC count?

westerner don't like Jrpg's! Fixed!!

That's one and in Japan only. JRPG sales on PS3 in the West are very bad so far. And it did good in Japan but I wouldn't say somewhere around 300k in Japan is great. So far the best sold JRPG and WRPG this gen are on 360. 

After two weeks Oo ... And don't talk about wrpg, this thread's about FFXIII, a JRPG...

answer 3...im a believer!

I didn't started it. YOU said 360 owners don't like RPGs. But my response is still viable for JRPGs as well.