Sounds like they should have done 900p on both consoles to ensure a smoother game. Personally I have played a fair bit of XB1 games in 900p like Witcher 3 and barely notice any differences between the PS4 version in 1080p so I would rather see games running better than having that little bit of extra resolution that is barely noticeable. I realize your intent was to show how inferior the XB1 version is (bold highlights as always
) but the bottom line is that it runs like crap on both systems. Hopefully a patch will come in the near future to at least lock the framerate close to 30 fps.