GT selling 15M on a system that hit over 120M was a great feat, but that was when it had no real competition.
When GT5 is released, it will be competing with Forza 3 (which will probably have been released before GT5) and be selling on a system with a much lower installed base than the PS2.
I'm guessing that without bundling, it'll do 4-5M sales. The GT series is losing steam. I have been through every GT made to 100% compeltion but I am at the point no that I don't even care if GT5 comes out. While I wait for that for what seems an eternity I played Forza 2 and now I see no reason at all to go back or remain excited for a game that doesn't exist yet.
Alot of the people that bought that $40 demo were more than a little dissapointed the game hadn' evolved in any way besides from a visual standpoint.
