It was a concept that could only be built with existing high power components ie PC. The graphical power by the time of next consoles will be as close as demonstrated.
Who is going to pay premium for the better specked APU? Sony or Xbox? You do know the $120 dollar constraint is for current contracts.
Who else can bring an APU that developed to the next console and underbid AMD?
Nvidia locked AMD in the console basement to survive on crumbs. AMD have gone all "Mc Guyver" with benefits to their PC hardware.