Board Thread:Game Discussions/@comment-78.238.90.57-20140405171200/@comment-24424436-20140405173108

If you enhance an armor with other armor(s) then it will be the normal plus 1 EP for each level it is above 1. Example in your case, enhancing with a level 70 armor. Let's say that it is a maxed legendary. So you either get 90 or 72 EP from the armor itself then you would also get 69 EP for it being level 70.