Just a rumor spread by an Anonymous Coward at Slashdot. Might be a dev violating his NDA or an idiot talking crap but realistically, it wasn't used in a tone an idiot would use (i.e. he mentioned it casually while complaining about something else, a faker would usually use it to "prove a point"). Besides, anyone who compared the specs could telly ou there was no way in hell the X360 would be three times as fast as two G5s. Not with its PPE cores. The G5's clockrate might add up to a third of that of the final hardware but a G5 is much more powerful per MHz.