User blog comment:Gundam Legilis/Monty's action sequences/@comment-25555436-20141228194533/@comment-25555436-20141228221459

Eh, yeah, I can give him that much.

However, whether the sword is old or not is not important. It seems very well preserved, and may be made of a material that's just that sharp. I'm sure that blade is made of more than just "normal" steel.

In any case, one doesn't need much strength to decapitate someone/something with a sword. Some strength is required, obviously, but not too much.