We are humans. Tools and Technology are intrinsic to us. A prepared human would not be fighting Chimps or Gorillas barehanded. That would be idiotic to do. No, we would have weapons, and those weapons would be based on which time period we find ourselves in. If you are talking about this day and age, the weapon would be a gun or rifle. So, we humans can kill an ape before it even knows what happens and at at safe distance.
So yes, a human who is not profoundly retarded could defeat an ape.