Talk:Riven/@comment-36.72.75.210-20121117042856/@comment-4834593-20121119194501

No, the damage you deal, is reduced by the amount of armor, a percentage reduction calculated by Armor/Armor+100. Then there are armor reduction, which reduces enemy armor, and armor penetration, that ignores enemy armor. Armor reduction is always calculated before armor penetration (as it's visible in the champions statistics, you know, the lower left corner of your screen), and at the moment, flat reduction/peneration is calculated before %, but this will swap with the next patch.