That's false. Cracker fought Luffy for over 10 hours, and wasn't even a fraction of in the bad shape that Lucci and Zoro are in. Dude didn't have a single mark on him, and was only fatigued. So either those two have garbage tier stamina and endurance to be looking that bad after clashing for only 20-30 minutes, or they've been landing attacks on each other. I'm gonna go with the latter.