I mean, when players are men fighting against some muscle women, the loser has to let the winner absorb some of their stats to grow stronger, giving the women a bigger advantage in winning. Isn't that interesting and challenging for the players
It could be if I implemented it as a "The player trains to be stronger and then loses that strength to someone" loop but right now I have some different things in mind :)
If you really like the idea you could try making a game around it!