Well the 2nd video was a body shot! and the 1st vid was a flush shot on the chin that many fighters would have been Koed by.
If that were the case he would still have a glass chin. Roy Jones jr lost his chin after weight draining himself, yet even after he stopped draining himself and going up to cruiserweight he was still knocked unconscious from a jab by Denis Lebedev. Once you develop a glass chin, you have a glass chin for life. Unless of course you're juicing
it was a joke. his standing 8 count lasted 20 seconds. he was on the floor for 10 seconds and the filipino ref was still at 4.