So, as a non college hoops guy, I think a good way to talk about these things is to talk about the scope of a player's potential. Most players never reach the upper bounds of what they are projected as possibly being in the league, so looking at any one player and saying that drafting the player will give us a player in the caliber of Chris Paul or Steph Curry is setting yourself up for disappointment.
(Projections are also sometimes wrong in the opposite way, A la completely missing on the top level potential of later picks.)
That isn't to say that he doesn't have star potential, but proclaiming any player to be an outlier player in the NBA prior to the player actually playing in the NBA is not much more than wishful thinking. Step back from the hyperbole and take a nuanced look at the player. What are issues that the player might face in the NBA? What weaknesses does the current player have? What is the potential upside, and how difficult will it be to overcome these hurdles?