Here's the deal the mock draft is a joke! It's been a joke for the last 15-20 years. They have guys projected mid-1st round and they end up going 2nd round because some unknown European ends up getting drafted and things are shot all to hell. Luke is not ready for the NBA. Some of you need to stop living like a Heels fan that every player who plays for Duke is NBA worthy. He's good but he's not great, yet. He needs one more year to polish his D and gain a tad more confidence. He does that and he's Top 10 next year.
I don't mean to pick on you as lots of people talk about this all the time, but we need to stop pretending that being ready for the NBA is all that relevant a question when it comes to entering the draft or being drafted.
Brandon Ingram wasn't all that NBA-ready when he left. But guess what - devoting 100% of your time to basketball (and zero percent of time to worrying about your studies), as one can do when one leaves for the NBA, will generally speed up the process of becoming NBA ready. Sure, some kids will benefit more from an extra year of being the big fish in a small pond, but many others will benefit from being a full-time, paid, NBA professional.
The NBA drafts on potential, not on readiness. And 9 out of 10 kids who are told by teams they'll be lottery picks leave, whether they're ready to play in the NBA or whether they just have lots of potential.