Mafia: general discussions.

Yes, you're just upset because of the unsuccessful percentage-based defenses. And for a "maniac" unit, it's even more reasonable to leave it like that, because maybe his only defense will be broken early on, and even if it's just by chance. Then someone else will finish him off, and that's it. So, it doesn't necessarily depend on the player's skill; they might be killed for various reasons. And this randomness can help the "maniac" unit survive until the end. You're just used to winning with overpowered "maniac" units, but in the early games, just reaching the final stage was already an achievement.