And this is what I mean. If you see the guy in front of you get their arms ripped off, how eager will you be to attack? It’ll be a couple really brave guys that get torn apart and then it’ll be a bunch of scared men pushing to get behind one another. The gorilla will have plenty of opportunity to rest without being attacked. This will be the downfall of the men. Their only chance would be to all attack at once or in large groups. But no one will want to be apart of those groups. It’s the not in my backyard mentality.
Perhaps also we can add in the idea of what time in history these men are from. Men of the Viking age would certainly fair better because of the mentality of glory of dying in battle. Or maybe with a strong religious belief that you are doing this for a higher cause. But in our current culture, no chance.