I have to go with WiiU vs XBox for the innovations that they brought.
XBox put a HDD standard in the box, no more saving on game cartridges, yet also started the 'everything must be installed first' era.
XBox also introduced paid online, a negative imo.
Combined XBox led the way to release now, patch later...
WiiU added a very useful secondary screen, great to have HUD, map, inventory in your hands with touch screen making inventory management and setting waypoints a lot easier, keeping the tv screen uncluttered.
WiiU also had Windwaker HD, best Zelda game imo, which worked wonderfully with the game pad.
(I never had a PS Vita)







