Talk:Wukong/@comment-5877442-20160413164518/@comment-4091261-20160629201736

Armor penetration is good against enemies who don't build to a certain point, if armor penetration exceeds enemy  then penetration that exceeds the enemy armor is useless as the damage doesn't increase past the raw physical damage. It certainly does rapidly accelerate the lower the values the enemy has in.

is a great item to have if planning on using armor penetration. The fact that there is a larger priority of harassing enemies is perfect due to the EQW combo.