Yujiro Hanma is all about raw power and has the muscles to prove it. The guy is a beast in combat but ultimately Goku would still have this. Goku learned a long time ago that in addition to developing your body to its physical peak that you also needed to hone your battle instincts and fight with a lot of strategy. He would be able to use Yujiro’s strength against him and dominate this fight. Goku wins.