Playstation 4 really isn't doing double the output of a Radeon 7850/560 though... But roughly the expected line, slightly better. So Carmack is certainly wrong.
So u r saying an SoC equivalent to 7850 paired with Jaquar CPU technically an APU clocked at 1.6 is on par with PS4? .. and again 7950 paired with a mobile Jaquar CPU clocked at 1.6 will run Battlefield 5, High Setting, at 60fps?