You know everyone keeps saying Patcher's predictions are always wrong but he said back in 2006 before the Wii launched that he expects a 3 way statistical tie between the 3 consoles. It looks like It might pan out that way by the end of this generation.
Wii sales will die this year giving rise to a better market share for 360 and PS3 I wouldn't be surprised if they were 40% with wii being around 20%







