We didn't really see full slow motion or actual close up aftermath.
It shows the weapon quality but not really the user's skill unless they try special techniques like a cut from the scabbard (well done to the XXXL man), winding mezani cut or even a back edge cut. I'm also impressed with multiple cuts at once on the same target.
I do agree with Midcal however, as I remember first starting out at my Historical European Martial Arts club and being utterly rubbish at fighting, yet cutting defenceless bottles with ease.
Funnily enough (I know I know, everything for me equals a relevant YouTube video) I had that experience caught on tape where I the newbie at the time cut bottles well enough: