Talk:Magic penetration/@comment-34050805-20190513221414

I think we must reconsider the gold value of penetration, for the reason that if we just calculate the value by the same amount of resistance, items that have penetration will be not gold efficient enough. This also give us a hint that from the different perspective of attacker or defender, the value of increasing or decreasing resistance are not the same. Form the perspective of the defenders, resistance always increase the damage they can take linearly. On the other hand, increasing penetration does not increase the damage of attackers linearly. It has a max value when defender has a specific amount of resistance, and the entire curve is not even a single analytical function. And also, penetration increase damage by percentage, which is a rare factor. Other methods of increasing damage are usually by flat amount. After you reach a high amount of flat stat, a small amount of percentage damage increasing factor can worth a huge amount of flat stat.