content: I am not disrespecting what you are saying, but those styles of combat are excellent for one-on-one fights. They wouldn't be much help in a situation where you are this outnumbered and out-positioned. Every tactic you mentioned is ignoring the fact that there are 4-6 fists flying at their heads in any given moment, all knockout possibilities. Framing their heads with their arms was literally the smartest thing they could do in this pretty helpless scenario. Martial arts training isn't designed to help you in this scenario. It's about understanding human violence, and having situational awareness (because of your respect for violence) to never be in this spot to begin with. There is a reason even in jiu jitsu that you don't start talking about serious defense against multiple attackers until you are brown or black belt. It's because these aren't systems designed for fighting multiple attackers. The best they can do is perhaps keep you alive until you can access a firearm or receive help from bystanders/law enforcement/allies. You never walk into a situation like this unarmed and outnumbered. If you're intelligent, you don't walk in at all. You see the human contents of that building, and you leave. You have to know where you are and respect it.