I readily admit that I don't know the intricacies of scouting for NBA talent. There are red flags galore surrounding Peterson if you care to look. I feel like there are 2-3 guards like him coming out every year. It's what's the between the ears that separates the dudes at that level.
On the other hand, I was inside the Maravich Center when the top-ranked Sooners traveled to Baton Rouge in 2016. Ben Simmons was a man among boys. I thought I was watching a transcendent player. We were the #1 team in the country, had been solidly in the top 5 for months, and he was light years ahead of every player we had, including the eventual Wooden Award winner who was wearing crimson and cream (no anthracite in sight). The dude drove baseline right in front of me, continued under the basket, and then threw down a dunk from underneath while never bothering to turn his body toward the hoop. Just a single fluid motion right back over his head. Words do not do it justice. Again.....the space between the ears told the tale.