260, did I miss a console?
But then again the PS4 can't play PS3 games, either? And did they say for definate that the Xbox One isn't backwards compatable?
It was a statement released after the event. Basically, the Xbox 360 and the PlayStation 3 used POWER-based processors by IBM, which is a completely different instruction set than the x86 processors used in both of the new consoles. Emulating the Xenon / Cell processors would be a Herculean effort and would require hardware well beyond what would be feasible to put in the boxes.