ph0b0s123 said:
The PC is 10x more powerful but you and Carmack are mystified as to why that difference in power is not being demonstrated...
I thought Carmack was smart. Bitching about the PC not showing it's potential while also stating that your next game will focus mainly on what consoles are capable of. These two things are related you know.
Carmack is pretty smart. I mean...
he builds freakin' rocket ships. 
(I also think he's being misquoted here, but whatevs.)
The argument about PCs being "x percent" more powerful are very misleading, and are misusing raw numbers. For example, consider that a 5000HP train isn't going to win a race against a 500HP muscle car - despite the raw HP numbers being far skewed in the train's favor.
The architecture of an XBox 360 is actually significantly different in many ways from a desktop PC... the main reason applications are more readily migrated is because Microsoft controls the development environment on both platforms. The PS3 is a bit further differentiated, but not nearly as much as people think... the challenges of developing for it stem as much from the development tools provided by Sony as from the uniqueness of the platform.
Consoles are purpose built for real-time graphics/gaming - which is why PCs, while most certainly able to eclipse their abilities through brute force, aren't necessarily "zomg 50x bettar!!11one".