How much of a system seller is Gran Turismo?

[Carl]

richardhutnik said:

Carl2291 said:
Considering Uncharted 2... A reletively unknown franchise with the 1st game already on PS3, increased hardware Worldwide by 20%.

What percentage of increase in sales of the PS3 is due to Uncharted 2, and how much is due to the price cut?

The week before Uncharted 2 released, PS3 hardware was at 212,996.

The week of Uncharted 2, PS3 hardware was at 252,880.

I think it's pretty safe to say what cause the increase in sales.