Wow! Another brick in the wall. Still, no one has cut through flesh and bone in any of this.

I mean, all it would take is a 175 Lb pig carcass, undressed (ie. Guts and skin intact) to prove the whole "convict testing" legend. Samurai swords are Very sharp, and generally built very well. The rest is legend and myth till proven otherwise.

Hacking into a giant blob of gelatin is a pathetic way to test a swords lethality.

And indeed Rembar, the shirtless one is a joke.