User blog comment:AYET/Why is Buggy not dead/@comment-10543621-20150306034932

I think that's essentially the nature of Buggy's fruit. I've always thought the damn clown should be waaaaay more powerful if he didn't goof off and actually trained to be a good fighter.

His fruit essentially allows him to split his body into multiple pieces. It grants him immunity to being cut. Imbuing your blade with Haki allows it to cut anything. No doubt, Buggy was well and truly cut. Problem is he doesn't die when he's cut. Sure Busoshoku allows you to bypass a DF ability, but in this case I think the problem is Buggy's fruit allows him to survive and control individual pieces of his body no matter how they're cut. So yeah, that's how I see it.

I guess if Mihawk wanted to, he could just cut him into mince meat sized pieces and scatter him into the wind if he actually wanted to kill Buggy, but that's a different matter altogether I guess.

Maybe the difference with cutting Buggy with haki would be that it might hurt? Kinda how it hurts Luffy when he gets punched with Haki. But the ability to survive while in pieces is kinda like a separate ability I guess, so even if it did hurt, he wouldn't die.