People saying they would see much a different between a PS4 NEO with 4Tflops, and XBox Scorpio with 6Tflops don't understand much about computer graphics. Sure if you look hard enough with comparison videos there will be some, but they will be so close few unaided eyes will see it. Now would you really notice when playing a game.
It's just a measuring contest.
PS Also, wouldn't the memeroy be DDR4? As in the orginal plans for the Xbox One?