As it pertains to Flyers drafting forwards, the overwhelming majority of their top picks (guys who had or close to PpG or played over 1000 games) are 6'1" or under (Clarke, Barber, Propp, Forsberg, Giroux). By my method I counted only 3 picks taller then 6'1" and that was Zubrus, Carter, and JvR (Couts if he plays over 1000 games)
I didn't look at defenseman, but just thinking of the best defenseman off the top of my head (Orr, Borque, Lindstrom, Stevens, Pronger, Macannis) only Pronger stands above 6'1". So yea maybe there's a reason people would write off a 6'3" physical dman as a bad pick at 12 when these types of players can be picked at later stages of the draft. Give me more than just big and hitz