I literally said a third of the way up, not average, average would be roughly half way. The whole point is size is more than just height, playing weight matters, probably more than height. The ratio matters too, tall isn't worth much if you can't put on muscle.
Would you call Macrus Pettersson in Pittsburgh bigger than Rossi? He's 6'3 but Rossi's got 10 pds on him.
The whole point is his size is being overblown, there's more to size than height but that's all people point to when discussing him. Weight is equally if not more important.
Sure, it's a fine line, he had a whole 2 inches and 13 pounds on 18 year old Rossi, well, unless you were talking about 23 year old rookie Alfredsson, in which case he just had the 2 inches
So is Jack Hughes too small to be a center at all? He might have an inch on Rossi, but Rossi has the bigger frame to go along with an extra 17 pds. I have my doubts Hischier ever cracks 190, is that ok because he's 6'1?