@PapasmurfHe broke both his legs and his arm and expended all his strength which is far more severe than what he went through during the 21st finals/Muscle Tower. He should've gotten a fair bit stronger. I think he could defeat Daimao without any help after healing from the fight.
Yes, I believe that's also why Piccolo chose to retreat right away rather than challenge Goku again when they were both healed.