Agreed that Harmon certainly lacks the humility... I would even add that he doesn't even know what a team is. He is what AAU represents. Himself. But while all that is true, there is a reason that when Harmon played against Garland last year at BA, the very first thing that Greg Paulus did after the game was go talk to Harmon's coach. Anyone who was at that game saw that Harmon was the best player on that floor... at least that night he was. I also do agree with the comment though that its still very early for him though. Lot could happen. He certainly has the arrogance to be capable of destroying his own chances.
However, I simply disagree greatly with your assessment of Jaylen Barford. Of all the kids I mentioned, I'd take him first. Size. Strength. Speed. The kid is scary good. Not that "one-on-one" matters much in terms of overall assessment, but Jaylen Barford would embarass Darius Garland in a one-on-one matchup. Saw Barford at Motlow and his explosiveness was borderline astonishing.