are you frickin blind ? looook at the page , on the left , what does that say ? geeez <| sep |> So every point into main stat is 1 % damage multiplier . As you stack any multiplier main stat or AD you comparative increase is less . Going from 0 % to 100 % doubles total damage . Add another 100 % thats now only a 13 increase . But if that increase come from another category it will be multiplied not added so that will be another double total damage . You can only get up to 174 % AD . After one item youll have a few hundred mainstat . Adding any area damage will always be a better increase comparatively . Remember AD does have only a 20 % chance to proc so its not a straight 1 to 1 comparison vs mainstat but you will have some much main stat you can see why I ' m saying alway just go AD .