I don't know if that's true. Despite his age, I think McKenna may take objection. I'd agree with possibly one of the best drafted players, but then again Sennecke is no slouch and how do you compare Parekh and Buium? Or Schaeffer for that matter. And while it may be debatable that he has the greatest upside, there me be established 20 or 30-somethings in other leagues who would fare better than he now because they're physically matured, have rounded their games, and have the experience.
I don't think that you can credibly make the statement "He's the best player outside of the NHL". I'd agree with "He's one of the players outside the NHL with the greatest upside / potential". Like I mean that's the point every other non-Habs fan is making (coming from a Habs fan). It's great to be excited, but be semi-objective at the same time.