If 2 players with average quality 50 and are the same in training, but one of them has 100 experience and the other has 500 experience, is the player with 500 experience better than the one with 100 experience by 2%?

It's the same. Exp is only for the youths (penalty skills) and for captain bonus

@Mahmoud if you are asking for the influence of the experience on training results, there is no influence at all.

During games, experience reduces the probability of a player making errors.

Also, as Minecodersam said, captain's experience gives a bonus to the whole team, and players with low experience receive a skill penalty

@maridiba "During games, experience reduces the probability of a player making errors." since when? i don't remember this update

I don't remember which post it was, let's just wait for @nicmo to confirm it. It should be added to the documentation probably

@nicmo

maridiba is right, experience reduces the probability of a player making errors.

@nicmo can you put in the documentation?

The documentation says: "In the first matches a young player participates they will struggle, their true skills are penalized by 25% until they reach 10xp and then it will go down to 10% until they reach 40xp."

I believe it presents a difficulty in launching young players.

savas52 there is more like nicmo said, so documentation needs to be updated