Forza 2 picked up when it hit Xbox 360 Classics series, so i guess that on hype alone it should sell atleast 3-3.8mln especially when gamers know that there won't be GT5 for a long time.
both ps360 owners will pick it up, 360 owners, some ps3 only owners will buy 360 for this game and people who didn't buy console before cause they were waiting for big racing sim will buy one for this game(and for the people who will immidiately say that they didn't buy one when Forza 2 went on the market - people were waiting for GT5 thanks to hype sony is making with this series and Forza wasn't well known back then).
i think in 2 weeks Forza 3 should hit about 900-1000k alone especially that it will be released on 32+mln consoles(Forza 2 was release when there was only 10mln 360s on the market). plus it will be released before christmas and that alone will help to move atleast 2.5mln copies by the end of the year. and then there are bundles, Xbox360 Classics series, pricecuts, possible re-releases etc.







