Some years ago my daughter was a cop briefly, she moved on to another profession after not too long, she’s 5’9 by the way, and they had a lot of heavy duty training on how to take down a bigger person. I’m not saying that she could take down any man. But they weren’t taught to do what these women did.
One of the tricks is to get behind the guy grab his hair and yank hard. You can bring down a big person that way when you snap their neck backwards.
I have seen that demonstrated. It's impressive!