Does this theory check out? If you take steroids and are in effect stronger, you will be able to last longer and take more punishment. In the long run, you will have taken significantly more damage than if you would've been finished faster. Maybe the fighter even won those fights, but he was tougher because of the PEDs, stayed in there longer, and took more damage. Does steroids make you too tough for your own good? Do the benefits of taking steroids outweigh this potential trade off? Is it worth it to take steroids to win fights, when you'll be taking more damage because of more endurance? This of course revolves around the premise that PEDs gives you a stronger chin.