"if you have two 18yos with identical quality but one is worth double the other, its because he trains much more quickly than the less valuable one."


this is NOT true. People told me this last season, so I bought an 18 yo that was worth 1,8 million (he was a 5-star). During my entire last season, there wasn't one single 18 yo in my transfer market that was worth more than him.
After I bought him, he turned out to be the slowest trainer EVER! One season later, he is still one of the worst trainers in my team. I have 23 yo's that train double the speed that he trains at