This is why we should not rate a fighter after one fight. He suddenly became the "next big thing" right after the Ali fight and now he's being placed on other side of the spectrum. He definitely showed some defensive flaws last night, and admitted to it, but some of it had to do with the fact that he showed little respect for Beefy's power. I agree with most that at this point he loses to the Hurds and Charlos of the world but he has not even reached his physical prime so we've yet to see his full potential.
Hurd beats Mung as of right now. In a few more fights, if Mung develops more polish, then things might be different.