Real katana strikes aren’t slow, they’re deliberate. Samurai that would duel in Feudal Japan could defeat their enemy with a single swing whilst drawing their katanas from its scabbard in one fluid motion. The victor was oft determined by their speed and accuracy.
I also said ‘if’ they change anything — not that the katana necessarily needs a change at all.
Lastly, I never suggested the katana in Predator should be swung around like a knife. You’ve made an assumption.