The PS2 still has the biggest user share even within the US. According to NPD research for June 2007 there are well more people playing on the PS2 than there are people playing on the XBox, XBox 360 (half the playtime spent on the XBox), the Nintendo Wii and Gamecube combined!
We are still at the very early stages of this generation, without the PS2 dying anytime soon (unlike XBox and GameCube).







