Talk:Garen/@comment-24475393-20140127214412/@comment-24475393-20140128205413

It is of no significance whatsoever that Garen's displayed value of armor actually changes for shreds but does not for penetrations. The silent ignoring of an amount of armor still results in a quantity of armor that does not benefit from a 20% increase, entirely due to the order in which the arithmetic operations are applied. The actual bonus armor value gets reduced/penetrated first and then the bonus is applied, if any armor remains.

BTW, I will catch my own error above about Darius. % penetrations stack multiplicatively and are not simply added as I did to get 72%.