Since summer 2012, I do nothing except training from 18 till 21. And I'm sure, that MVP or allstar or any other potencial doesnt reflect training speed. Potencial has influence only for the price (and cap speed).
(30055432) and
(31028226). Both players were almost the same, but their price...both were sold ant age 21.
Sometimes I question myself, what would be the price, if their potencial would be hall of fame.