No Konecny was not considered slow.
The player I was referring to was Wayne Gretzky.
They said he was too small and too slow...
One pretty dominant 1C that was built like a small truck was Trottier. He was listed at 5'11'. 71 inches vs 69 inches ... now we are not talking 5 vs 7 here in the size matters discussion. Trottier was not a speedster.
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I get the 5'9 concerns if he was 165 I'd worry more. I think his lower body power and his smarts will allow him to succeed. John Tavares is a bull, not fast by any means, and he plays C pretty effectively. Rossi is not fast but he's not slow and he is quick. Rossi already has a mature 2 way game.
Anyway I am not beating the big bass drum for him.. I think he belongs in the conversation at 5 and I think he overcomes his physical disadvantages. Its a very easy thing to lookup on hockeydb and form an opinion on player based on height. What he has , he's made it work for him pretty well so far.
Perfetti is 5'10, Raymond is 5'10... If we are picking one of those 3 forwards I don't think height is the top of the list criteria we are using for separating them.