The difference being is that Leonard is doing this against smaller, weaker junior opponents while Slafkovsky has done it against grown men. I'll always be leery of drafting a "power forward" at/under 6ft.
If we're talking about a Gorton or Bobrov-style player... They've moved up twice for defenceman with size, skating, and offensive ability with lesser puck skills (Schneider, Miller), have a habit of reaching slightly for European players - Andersson ranked 13th (taken 7th) and Kravtsov 12th (taken 9th) in Mackenzie's final poll - and there's a clear team-building element in picking a two-way RD. I'm not sure I'd call any of their 1st round picks with the Rangers as one-way or physically weak players. I can definitely see Reinbacher.