Tuor remained very tall even in the published COH (see post#12)... As for the Noldoli, I guess they were smaller than the other Elves...
It could also mean that Tuor was broader and more, I guess, pillar-like. Elves were more elegant, perhaps, and the difference in height wasn't that great, just emphasised by these features...
I don't know. But that's my interpretation.
