Haha wow.
I remember some people claiming 5-6 million even SEVEN million lifetime for this game on these forums before the game even came out, some of them might even be in this thread.
Since GT5:P is at 4 million with downloads included (PD's site), and will continue to sell until GT5 comes out (and even then it might sell a little) I'd say that yes, GT5:P will sell more than FM3 lifetime.
The Killzone vs Halo and Forza vs GT is a great comparison.







