Square Enix: Final Fantasy 13 needs 10 times the success of average titles.

[Khuutra]

Rei said:

The initial shipment in Japan should be 2 millions. Overall I expect the original version to sell 7 millions worldwide.

If I am not mistaken they said at last years GDC that they have about 400 people working on the game. EDGE says there are about 200 people working on just cutscenes.

I'm not sure but that is probably the most disheartening thing I have ever heard.