God of War 1 - 3.72 m
http://www.vgchartz.com/games/game.php?id=869
Sold less due to
1. Increased piracy
2. Launching on a last gen system - This is further proved by the fact that GoW II sold near equal amount as I in Europe where PS3 launched late.
http://www.vgchartz.com/games/game.php?id=6078
These games could have easily become 5m+ sellers...
So what do the "125m userbase" trolls have to say now ? I remember some people predicting 2.5 million life time for III !
III should easily sell 3.5m - 4 million.. Has a chance at 5 if legs are awesome...