To OP: I couldn't watch the video you posted. Did you delete it already?
Don't know if this comparison was intended as joke or not but Senteria has said it already: The Witcher 3 hasn't been released yet and Assassin's 4 has, any comparison is moot.
With that said I just finished Assassin's Creed 4 Black Flag. I liked it. Do I predict I will like Witcher 3 more? Yes I do(no pressure CDPR
). I will love it.
How can I predict this? Well, I've replayed Witcher 1 and 2 three times each and love them.
Assassin's Creed games, however good, I haven't replayed at all.