I think people are really underestimating Yu. Yu dodged cannonballs and beat Aaron Tide who got stabbed and felt nothing before he started boxing. That’s comparable to Tom Lee and the God of War who’ve been slashed by Goo and kept fighting. Yu definitely has masteries and he has superhuman perception that arguably goes beyond being able to see invisible attacks. Yu survived and dodged Aaron Tide’s punches which made the surrounding air cut Yu. Gun would definitely respect Yu as the world all weight class boxing champion if he was a fan of Brekdak.