Disruption is blunt only!

[Mad_Bombardier]

Maybe not piercing, but its completely possible to knock somethings head off its body with a blunt weapon.

But, not any old bludgeoning. I can only see a Greatclub working. Vorpal Greatclub FTW!

[SneakThief]

Apples and oranges. The Vorpal effect is quite clearly stated as the decaptitation of its intended target. Can you think of a piercing or blunt weapon that can cleanly decapitate its target even in the hands of the most skilled weapon masters?

Maybe not piercing, but its completely possible to knock somethings head off its body with a blunt weapon.

[Furgulder]

Most people don't consider zombies to be among the most powerful undead.

Unless Robert Rodriguez is directing their attack