system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: A chimpanzee with no legs would still beat a human in unarmed combat

This is based on an argument I had several years ago. For the sake of argument you can pick the human, but by default let's assume it's a fit, healthy adult male chimpanzee vs Dwayne "The Rock" Johnson. The chimpanzee has had its legs removed completely (no stumps, no open wounds) and has been given time to learn how to maneuver without them. The fight takes place in a large, empty field. Both combatants are unarmed and unarmored.

Regardless of how strong a human is, they can't match the strength of a chimpanzee. The chimp could grab their arms and stop them from getting any leverage to get in good hits. Given its arm strength, I believe that it could learn to walk on its hands with relative ease, and would be fast enough to mitigate any strikes the human would make initially, then grab on to whatever limb the human used. From there, it could bite the human with its powerful jaws, doing some serious damage, possibly enough to get to an artery, which would severely weaken the human. Chimps have also been known to target the genitals, which would be excruciatingly painful and rapidly incapacitating. Even if it didn't get a good hit to either target, its strength would mean that it could continue to pin and climb the human until it could get to the neck of head to deliver the finishing blow by biting or attacking with one arm. Even with the advantage of having legs, I don't see how a human could win this fight.

To change my view, I think you would either need to show that your selected human could defeat a chimp using abilities they can be demonstrated to have, or prove that a legless chimpanzee would be incapable of fighting for some reason.
gpt
I think you are underestimating the usefulness of human intelligence.  The human can, say, throw some dirt in the chimp's eyes or otherwise distract it, get behind it and strangle it.  The lack of legs would make it very difficult for the chimp to throw the human off.

[In addition, while the chimp could use its arms for locomotion, it would need to choose whether to use them to move or to attack.  A human with some skill could also time a kick at the face of the approaching chimp - in order to stop it, it would need to use it's arm, which would cause it to fall over, something it wouldn't naturally want to do.]

Game over.  Chimp: 0, Human: 1.

(And, no, of course this wouldn't be a sure thing, but certainly very possible.)