First. That raider is not skilled. Sorry to burst your bubble but he's basic. He can block so he's okay. But the errors he made were terrible. I'm against ppl that wouldn't have taken any of those hits from her besides the parry.
Secondly he couldn't block cause he was knocked out of Stam, the second GB strike he blocked upper stance and changed to left too late, had it been to the left from the start he would have blocked it despite the ring being dark. I block after GB from some classes in the same way, even if it's dark, u can still block a lot of different classes heavies.
I have video at home of ppl blocking my side heavies after a GB. I never top heavy strike because even duel bot 1 can block it. I have almost never been able to hit with it.