Kinda funny how IE gives 70 AD while the average AP item gives 80 AP....

So we're saying Rabadons needs 140 AP? I wouldn't argue with having that much AP xD.

AP doesn't apply to auto attacks except against structures. /thread

You also have to take price into account, 3400 for IE compared to the 3 k for Gunblade, or 3.2 k of Lich bane

AP doesn't crit. You can't get 100% Crit damage with AP like you can with AD.