Tom, it's all about the games. True the P$2 might be faster than the DC, but it has no really good games!
Also, one more thing. If the P$2 is so damned fast, how come it stuggles so much with running Unreal Tournament with only 5 bots in it. The framerate often drops below 20fps according to the reviews!
Sony may claim that the console can pull off 75 million polygons per second, but why can't the console run UT with more than a maximum of 5 bots? And that at an unplayable framerate!