I believe for WiiU, you only need to have watched all the cutscenes once I believe. I myself haven't ever played the WiiU version though, so I am not entirely sure

Answer for your question Quadruplex, You can skip cutscenes without needing to watch before hand (speaking for the WiiU Versions (Download and Disc). I know this because I accidentally deleted Game data off of my System before, so I just rushed through the game to get 100% on all four data slots (Life wasting, I know but I Don't Care I enjoy the game).

Thank you Waltek :) Yes... I saw in your WR video, you truly are very dedicated. I've only got 100% once in my only save slot xD