To my understanding if 5 players have same score it ranks them by the smallest amount of rounds needed to finish their training.

So if 1 person finished his fights in 4 / 4 / 4 rounds (12total) he is higher placing than person who did it in 15 total 5 / 5 / 5.

Perfectly balanced system and no way in hell its fair to give same rewards to player who needed 30 rounds to clear it in total and one that only needs 6 in total [btw yes it's possible to fini* in 2 / 2 / 2 rounds, 6 total]