Interesting that he states one of the biggest mistakes he made this generation was saying consoles are as powerful as PCs five years back. I guess they were back then. He also says that even though PCs can be many times more powerful than the consoles, due to inefficiencies with graphics drivers, operating systems and other, extra layers of abstraction, it has been most difficult to hold 60FPS on the PC.
http://www.gamasutra.com/view/feature/6461/carmack_on_rage.php
