I guarantee if you were standing on the block with 4 of your boys and 1 rabid pitbull runs down on y'all you will scramble. Humans are not built to run fades with beasts. Without weapons in hand fear will overcome you and you'll choose flight for self preservation.
Go watch any video of a Pitbull attack where they lock their jaws on someone or another dog. There's 10 people kicking and punching but the pit doesn't budge. Humans hands can't damage a gorilla if they can't KO a dog.
100 random men will mostly be

and as soon as the gorilla enters the arena 75% of the group will be nearing a state of panic. Once the first 5 get their heads knocked off and arms torn out the sockets 50 men will instantly shyt their pants, piss themselves, and vomit. They're going to run and won't ever enter the fray. The rest will be so discombobulated they won't be able to work together.
The gorilla doesn't even have to kill 100 men. After witnessing 20 gruesome deaths no one will to fight.