Ragna is a super powerful fighter but even he will be outmatched against Mujin Park. Now here’s a guy who is a master manipulator who also obtained absolutely insane abilities. His sheer power is many leagues above Ragna’s and I don’t see that changing. All of Ragna’s attacks would be unable to get past Mujin’s immensely powerful barriers. They would just be too much for him. Mujin Park wins.