mattCR - you've actually misrepresented quite a lot there. The significant hardware difference between the XB1 and PS4 is that the memory is different types. The PS4 architecture is a bit better (they do make hardware, after all; MS makes mostly software) but they are basically 99.9% the same...
The marquee XBO game up to this point was Titanfall, which did not use Kinect at all and was available on the last-gen MS console as well as PC. It was the number 1 selling game for the month it came out but the XBO was not the number 1 selling hardware.
I think that alone says everything that...