Potency is the distinguishing difference for damage between the WRR and PLD. Determination increases damage based on your Attack Power. Only determination increases your base attack damage (So to increase your damage add Determination) and Direct Hit increases that base damage and Crit increases Direct Hit damage. It's why they are using quotation marks to indicate the differences. Attack Damage (); Direct Hit (!); Critical Hit (!!). If you want to increase Attack Damage add DET. To get more Direct Hit's add Direct Hit. To get more Critical Hit's add Critical Hit. From what I've seen is that an Attack Power of 1800 will still be low because of the lack of Determination and the difference in potency between the WRR and PLD. Even with good Determination the WRR will always be stronger because of the potency of the weaponskill. The differences are because one is offensive(WRR) and the other is defensive(PLD).