Why didn't this person survive?
The teenager in question had gotten trapped in a leg-scissors hold that restricted his windpipe and made him unable to breathe. A scissor such as this can exert about 200 pounds of pressure (not pounds per square inch) now people fighting for their lives have an adrenaline rush and even really weak people have lifted 2000 pound cars with just their arms so I can't see why this guy, who was average/big, couldn't lift 200 pounds of squeeze to get the legs off of his throat. the paper says he struggled for his life for many minutes. The guy doing it was slim and weak.