yes I read that a few times as well, that more rounded players train faster.
However I am not convinced that it is true yet... It is not in the rules, not that I know of anyway.
What is true (since it is in the rules) is that players who fit a certain position (and thereby have either height or skills to play that position) would train faster in the skills they use most, and if the other often used skills they have are high, they train faster in the skill you are training. (this is if you train blocking, a bigger guy trains faster, and also a guy with good rebounding and inside D skills trains blocking faster as well)
I can't find that a player with atrocious shotrange, would train less fast in blocking, then a player with respectable would, if all other skills would be respectable as well...
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