
I think NBA comparison would be excellent. I could imagine it working...
E.G.
"Bob freedachicken"
NBA comparison: Darius Miles.
Doesn't mean the ratings would be the same, infact they'd most likely be worse, but it just gives you a good idea of how they're play is. in this case he would be an athletic freak whose jump shot isn't good and isn't very finely tuned.
E.G. 2
"Henry Atetwochickens"
NBA Comparison: Less fit Elton Brand
You could always use the "Less fit" or "smaller" or "bigger" or "young" words before the name to give you an even better idea. in this case i'd assume that my rookie will be a pure kind of player with a good jumpshot and is finely tuned...but isn't very fast, agressive and wont be on many highlight reels.