I do not own either console, but I will go ahead and state, as soon as I can find a Xbone in store I will buy it. It doesn't come down to graphical comparison, pixels, ads, power bricks, and such for me. What it comes down to is my preference for fighting games. I prefer KI over GG and BB. EVO is making the switch to Xbox as well. I highly doubt the next Street Fighter or Mortal Kombat will be exclusive to either system, so I can't go wrong. KI gives the Xbone a slight edge for me is all. As far as other game genres, I simply do not care. Every other game I play on PC, if I even play another game.
You made some good points for people who aren't strictly basing their decision on KI though. I suggest they take in your advice.