Talk:Piercing and Resistance/@comment-151.177.28.95-20150507081623/@comment-5071138-20150521045447

For every 1 Piercing Power you have greater than the defender's Piercing Resistance you gain 0.1% boost to your eAtk(Atk + Def*0.7).

For attacking your Piercing Power will be deducted by the defender's Piercing Resistance. For Defending you will decrease the attacker's Piercing Power with your Piercing Resistance.

So if you have an eAtk of 1000 you have 100 Piercing Power greater than the defender's Piercing Resistance you gain +10% of your eAtk or 1100 eAtk in total. But if your opponent have an 100 Piercing Resistance greater than your Piercing Power you have -10% of your eAtk or 900 eAtk in total.