I know a lot of you have weighed in on this, but the answer is easy: The men would win. The Gorilla would destroy maybe the first 5-10 dudes it faced, but it is going to get gassed and wouldn't be able to put up much of a fight for the remaining 90 or so dudes. Now, the first few would die horrifically, and that could discourage some of the guys....
This does remind me of the question "how many kindergarteners could you take?" And, I think you have the same idea. As a grown man, I could probably destroy the first 10 or so, but more people can only fight for short periods of time before they are exhausted. So, despite their small size and lack of strength, they would overwhelm me probably early into the fight.