The best 19 year old in the draft, should be better (in terms of skills) than the best 18 year old in the draft. But not potential.
I suspect what it's like, but I'm seriously interested to see the number of U21 players who were drafted 19 years old. Is it okay that that number should be 0%?
I think earlier suggestions of having a cap is maybe a bit harsh? maye it should just be a 'general' rule. Because generally, an 18 year old will only ever have maximum respectable in any such skill. And generally, for 19 year olds, it should be strong. BUT i dotn think it should exlude entirely the possibility that an 18 year old can have strong in a skill.