Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - General Rock Paper Scissors Does not Work Mathematically

Only even levels in Charisma should increase your points per win. So 3 at zero, then 4, then 5. You could get 6 points per win (default) at 6 Charisma, but no one would care by that point, unless...

Odd levels in Charisma should decrease your opponent's points per win. So 3 base, then 2, then 1, then 0. This would mean that, at 5 Charisma, you'd automatically win every argument against NPCs with no particular Charisma bonus.

Note that your opponent having very high Charisma may make Charisma 6 useful (since your 6 may be reduced by 1, and 5 is better than 4).

edit: Actually on reflection that sounds kind of hairbrained. I don't know. But I agree that getting 6 points per win is kind of pointless.