I am pretty sure that the 10 my son received from his first PG showcase got him a 90% scholarship because after that he was seen by Sully at Jupiter his junior fall and heavily pursued until he said " yes to the offer".
One thing about a PG showcase grade, it is not about that particular performance, but future potential.
I don't want to get into another revived discussion going on in another topic, but anyone can improve their grade. I think it can become a great motivator if the player is really motivated. Although son received the highest grade, he still worked on becoming the best player that HE could be.
As far as the story with Jason Berken, it's true, because he was sons teammate and close friend (still is). It was his location that hurt him. Not his lack of ability.