Talk:Xerath/@comment-50.33.207.240-20120723081607/@comment-2179912-20120725141930

200 armor means he will have 130 bonus armor (he's got 73 base armor at lvl 18 I think). So, since only 15% of his AP is converted to armor, he must have 866 AP to achieve 200 armor. By the time you get to have 900 AP the enemy carry will be so fed he won't give a shit about your 200 armor.