64% is a huge amount of people out there that can be convinced. My guess is most of them will be casual gamers. X1 has the higher potential to pull those customers in with their Kinect 2.0. I would not under estimate them. Of course even if X1 eventually outsells PS4 because of the casual gamers, core gamers traditionally spend more money after the system purchase but with new entertainment options available, I wonder if that will continue to hold true through this gen.
Me, I pre-ordered both consoles so does not matter what sells more. I just want them both to do good :)
Time will tell but one things for sure this next gen gona be interesting.