Depending on how much (or little) Ubisoft integrates the gamepad, the PS4 will have the best console experience. If a year and a half (plus the R&D years)* isn't long enough for Nintendo themselves to fully implement gamepad functionality into games, i doubt Ubisoft can just up and do it.
*EDIT: Nintendo showed the gamepad in 2011's E3 (if I'm not mistaken)...So its been 3 years next month







