Thats a very flawed prediction.... the XB1s has 4k blu-ray and momentum and even with the PS4 having a PS4 and another more expensive PS4 it could barely beat XB1 in novemeber and december. No way the PS4 wins january. Again.... XB1s momentum.
The 4k UHD of Battleship came out last month, so I think that's gonna give Xbox One the edge. Mere PS4 games can't hold a candle to watching Rhianna fight aliens. Sorry, Sony.