Gran Turismo 5 sales predictions??

[okr]

I think GT5 will be the most bundled PS3 game AND it will sell for years (bundled and unbundled).

=> between 10 and 15 million lifetime

I wouldn't be surprised if it will end up closer to 15 million than to 10, but on the other hand I wouldn't be surprised if I'm completely wrong with my prediction. I suck at sales predictions...