Cal recruits specifically for draft night. That is his lead pitch.
I don't know that Roy leads with draft night. I think he probably leads with "daggum UNC...daggum ACC...daggum ESPN loves us...daggum MJ...daggum Jordan Brand...daggum easy classes"
Cal likes to say "i don't force anyone to stay", and I think Roy's philosophy is " I'm not going to force anyone to go".
I think the culture Cal has created puts kids on the clock, and they feel from the minute they step on campus that they need to be pro bound in less than a year, two years max/worst case scenario.
If you could get in the mind of Roy, I think you would see that his vision for UNC basketball is winning more titles than Dean and K. NBA ballers are the cherry on top.
Cal's vision involves stocking the league which he claims will pay dividends in the future. In addition, he seems like he wants to change the game on this level and how we approach amateur sports, young athletes, our expectations of them, and what we view as successful. Titles are the cherry on top.
I don't know if either is right, wrong, or better than the other. Just two different cultures, styles, and philosophies.