We have three dead scums.

If the situation were such that town only wins if we eliminate a mafia inside the lover team, that basically gives the mafia 5 useful members.

Even if the "townie" inside the lover team is marked as town, his concern is then only to survive. He's not really town, but 3p and essentially hostile to town.

So, if one of them were scum, the game would have 5 hostiles.

Versus just a joat? That's tough.