I've often felt personally that facing off with nihontó is more akin to a western gunfight/duel. In it's formalised form a lot is to do with speed and accuracy of the unsheathing/draw. Many fights being over in one cut. Unlike the classic "b&w" Robin Hood swordplay we see. Though as said different blades very much dictate different styles, and some of the wrist work in foil play makes the mind boggle. Though few things inspire confidence like an ōdachi or katana in your hand. (bring on the zombies).