21 - Friendly players registered with wins/losses
To reproduce:
1. Duel a friendly player
2. Either you or friend are killed with combat log range.
3. Win/Loss is recorded as a PvP event
We should probably not be using UnitIsEnemy() api, but instead using their faction, and comparing it to the player. UnitIsEnemy() only tells you if the target is currently hostile to you. I don't know if it's *always* possible to get the faction info though.
