Why would you put the mechanics of a heavy action game into The Witcher 3?
A better comparison would be God of War, and we all know what the majority of people of those series, so Western development can produce excellent combat systems just as in Japan.. Right now, however, I can't remember any other hack n' slash produced in the West, but that just speaks for the preferences that prevail here, which do not mean the stuff created here pales in comparison to Japanese games, it's just different and plays its own thing.
My bet with The_Liquid_Laser: I think the Switch won't surpass the PS2 as the best selling system of all time. If it does, I'll play a game of a list that The_Liquid_Laser will provide, I will have to play it for 50 hours or complete it, whatever comes first.