I've seen many games of Mantha literally not coming past his own blueline to suck goals and scoring chances. He has an NHL scoring shot already and is a great skater that gets to spots when he wants to, I will give him that.
I feel slightly more apprehensive about my Zadorov statement, but these are defensmen after all and while I don't feel 100% confident in my statement, for now I'll go with a season's worth of watching him over 4 games with the Sabres.
I have seen these guys play a fair amount and developed an opinion over the course of a season, I feel confident in my assessment to this point. Things can change and I could be really wrong, but that's where I am right now. The true test is in 5 years and even farther down the road to see where these players have progressed to, not 4 and 10 games. I won't be afraid to say when I'm wrong but I don't think I'm wrong yet.