True, except that the feat here is to convince the opponent to consider you as an ally.
There is no difficulty in failing a check ... So to reward a failure more than a success isn't helping at all.
The other point being that while what you said isn't much of an issue in other RPG, in DOS there is no respawn, so the XP quantity that you can earn is limited. Favouring a way to resolve a quest isn't helping the sense of freedom at all.
