What people are missing is that wonderkid doesn't mean high PA, it means high CA for his age, normally coupled with enough difference between CA and PA to grow further. In the EPL for example, I would only give Wilshere and Phil Jones wonderkid status (possibly OxCh), but that's just me. I imagine Raheem Sterling would probably become a wonderkid after 6/9 months of first team football but certainly not at the start of the game.