Fable, why everyone so confident Ff13 going to become a hit on 360? with some luck it will do 1.5 million lifetime. and it won't surprise me at all if it struggled to reach a million, considering the popularity of Jrpg on 360.

So, how much will Final Fantasy XIII on the PS3 outsell the 360 version by?

Fable II easily. Here is my regional breakdown (for later question)

FFXIII X360:
America: 1.1milj / Others: 600k / Total = 1.7milj.

FFXIII PS3:
Japan: 1.8milj / America: 1.3milj / Others: 1.3milj. / Total = 4.4milj.

So by 2.7milj

Fable by probably 1.5-2 million LTD; this is a console exclusive game that has grown with the xbox crowd, Final Fantasy is more associated with Sony than 360. Then again I could be wrong and it could sell about the same (I just do not think so personally).

As far as the sales between both version I would say:

1) Xbox FF 13: 900k-1.2 million LTD

2) PS3 FF 13:  2.3-3.7 million LTD

I say about 1.9 will sell in Japan probably the first day/week.

lets see FF13 should do around 4 million on 360

so FF13

FFXIII will NOT do 4 million in the west between the PS3 and the 360.

ignore darth hes a silly fanboy, who thinks FF13 will actually sell 10 million+ copies.

Fable 2 will sell more

Fable 2

"durrr jrpgs aren't popular on 360".
OBJECTION!
700k+ westerners bought Lost Odyssey. You expect a new IP to be a Final Fantasy killer or something? Those sales for Lost Odyssey are great.
The "360 gamers don't buy jrpgs" myth needs to be put to rest.

Fable II (and III) will spank FF13 on the 360 but that's only because Fable II is a highly successful 3 million+ selling game in the west. With the PS3 and 360 bases being split for FFX, of course the 360 and PS3 versions will each individually sell less than that.