Hi. Long time player of your mod in SC2, i noticed this problem several times but only now deemed to share this here in these forums.
In this game, me, GrandaTO, was a Doctor in a game that town lost. I was killed early on and played Russian Roulette 3 times.
First time bet 10 points. 2 opponents bet 5 + 5. I won.
Second time bet 5 points. Opponents bet 3 + 2. I won.
Third time bet 1 point. Opponent bet 1 point. I won.
In the end of the game I had won 7 points (6 were from the roulette!). That shouldn't be right as by default I should have won more points as town. Also some townies that didn't played Russian Roulette won like 7 points, same as me.
Here's the replay of that game:
https://www.sc2replayed.com/replay-videos/5982
So either is a bug or Russian Roulette is not really worth playing.