Whatever. I am sorry that the only way you can make the player you are trying to fluff up look good is to ensure that he is older than everyone he is compared with.
I'm arguing the general principle. I dont care about your born again fervor after having seen the light about Liljegrens badness. I dont care about how other random 2017 drafted players are doing. I do care what Liljegren has done as a u19 and u20 relative to the historical cohort, what it suggests about what he'll do as a u21 relative to that cohort, and what that says about him as a player.