I usually play as a lizard and most of them still flop unless I respec to 5 persuasion, which I decide to do now just to get a certain quest in Arx to clear with no one dying.
I even tried looking up stat of the other side (since persuasion used to check like Fin vs Wit in EA IIRC ) and sending someone with very high stat and they still flop.
It's like they completely removed of stat comparsion and just make each stat worth a point or something and persuasion worth 5 points and adds them up to check if it's a pass or a fail. Some of the heated arguement just end up having too much into it that even a respec Lizard (+1 pers) can't get it going without some hidden and weak persuasive accessories set.
If the peasants refuse to listen to the charming master race lizard, you know they ain't going to listen to any body.