Pretty good actually as long as he doesn't fight Golovkin. That would instantly make him a bum But he can probably pick up one of the vacant belts after GGG left the division.
He is definitely a one potential champion candidate after Golovkin gets old, moves or retires. He makes it or he ends up being a high risk, low reward type of contender like Stevens. It also depends, what kind of politics is playing around those belts after Golovkin drops them. He will have to beat guys like Murata, Saunders, Jabobs, Lemieux, Monroe jr. and Derevyanchenko plus guys moving up from 154, so it won´t be easy. 160 is definitely a harder division to win a title than 154 or 168.
Well he should have no problem with the step up in weight. He had become essentially a massive LMW. Outside of GGG, I see him being able to compete with anyone.
In the Williams fight Jermall displayed impressive power and encouraging levels of composure as he introduced the highly rated J-Rock to defeat. I don't know how heated the build up was but Charlo did not seem to accept Julian's post fight buddying up attempts. This would seem to indicate a mean streak that could serve him well. Personally, I find this bad-ass persona appealing (as long as its genuine) and look forward to following this guy.