Yeah, Randolph is a pretty decent physical comparison. Randolph did have an at ude and work ethic questions; he didn't develop much more than what he came into the league with. Also the league has changed a lot.
Like I estimated 75% chance of being a least a bench guy (Which Randolph was, he got a second contract. He also got his a bit together after kicked out of the NBA and made himself a Euroleague career that was pretty decent - A euroleague and 2 spanish championships). With a better at ude, he probably would have played 10 years in the league...
A guy like that, on a strong development path, in the current league? Yeah, he could be pretty good.