Topless fight is the top of fight! never a low fight when topless!
When you have your upper body naked, even if you are man or woman, you will put all you have in the fight.
You have to show your muscles, your skin, your boobs (in woman case) and at the end of the fight all the scatches and blood will be visible on your body. Nothing better than a fight without anything than your muscles and your skin on your upper body.