I just want to pipe in for a bit here.
First of all, people really need to stop exaggerating the strength of chimps. The reliable data puts them at twice as strong as a human, pound for pound. That last part is very important. I means that a 250lb human that is a muscle-filled monster would be just as strong as the chimp.
Also, people are under-estimating how powerful humans can be. Yes, a chimp can break a bone, but so can gigantic fighters. Hell, people keep refering to that older woman getting her face mauled beyond recognition. A testament to a chimp's power, for sure. But, let's be honest, Alistair Overeem could've fucked her up just as badly if he was as uninhibited.
That being said, I do still give the edge to the chimp. It's almost impossible to put a hold on it. The though is asinine, as it would literally tear any limb you're try to use apart, something an MMA fighter can't do.
This, combined with its terrifying teeth and the lack of "button," would make for a very steep challenge for any human.
But I just wanted to pipe in, because people saying that chimps are 15x stronger than the biggest human and could rip an arm totally out of its socket are just making them into superheroes they're not. Yes, they can break bone and fingers off. Guys, humans can do this too.
The chimp is impressive enough without people exaggerating for them. It just makes the pre-chimp side (my side, to, once again, be clear) look like hyperbole-fuelled fanatics.
My 2c.