Talk:Kayle/@comment-4881935-20130118012005/@comment-2124153-20130118164212

FYI, there is a point where TBC + passive no longer have synergy. If you repeat the experiment for 100 base armor, you get a 22.38% separate increase vs. a 22.12% combined increase. Yes Virginia, this technically means losing 1.2% damage efficiency by stacking, due to diminishing returns.

So the TRUTH of the situation, is that the answer is nuanced. Stacking %pen/reduction is synergistic against HIGH values of Armor and MR, but not against low ones. It is, as I said, circumstantial.