A fast trainer actually does worth more.

For example this 2 players
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The differences is about .04M and is only 2 years diference.
Ivan gains about 50/90/180 in hard training and 200 per match. Where Golan barely does hit 100 in practice match.

ivan normally get 3-4 points every 2 match somethis 5-6 if he get man of the match. i had him since my 1st season at 15*