Impressive armour. Quite a lot of energy dissipated in smashing a breeze block though and I wouldn't want to try it myself! Very different behaviour to an elastic chest wall which dissipates some energy in deforming, so neither the block nor the test dummy show us much about behind armour blunt trauma injury. I imagine it would be Seriously Ouchy. Interesting read about body armour testing here
https://www.nap.edu/read/13390/chapter/10#175
But I'm impressed by a plate that stops a 50BMG penetrating from so close.