I've gotta say, there's a very simple reason why so many here weren't overly impressed with MacEichel's play: Scouting ability must not be a talent most people naturally possess.
Forgetting the age differences, if you folks can't see the inherent skill these two possess... the speed with which they make decisions, the quickness of their plays, etc., etc... well, then you're just going to have to wait to see them do it in the NHL. They both possess 'elite' skills... like Crosby, Ovy, Malkin elite skills. As usual, the professional scouts know what they're talking about here. I myself was hoping that both MacDavid & Eichel would have lackluster tournaments, performance wise... for fantasy draft purposes. Luckily (for what they could do), they both were pretty unlucky. Each could have had 20 points with some puck luck without looking any different than they did.
Personally, I've always found it pretty obvious which players (and their skill sets) will translate into, and become NHL stars. Duclair? Won't. Reinhart? Could. Petan? Likely would. Domi? Should. MacEichel? Will.