You couldn't take something out of a 360, or a PS3 and use it in a PC, so no, the 360 and PS3 are not PC's
- stands to reason that a PC component is only a component for a PC when it can actually go into a PC. It's clear that these next gen consoles share a lot of common ground with PC's, but that's more because the PC style components have developed through necessity, it'd just be stupid to complicate matters when all this expensive research and development has already been done.
All those people with 3-reds of death 360's could sell the gfx cards or use them in PC's if that was the case, I kinda wish it was!.