What I think....
MS is trying to compensate the IQ drop compared with PS4 using magical post-processing... the 32MB eSRAM will be used to that... post-processing... the render will be made in the 68GB/s RAM yet.
32MB eSRAM is enough to post-processing 1080p output... but the render part will have better IQ in PS4... you can't render in 32MB.







