Critical Damage runes on Ashe?
I came to think about this... how does this work? If we said Ashe had 100 AD, a slowed enemy and 20% Crit Damage Runes (9 Marks give 20% Crit Damage), would she then deal 130 damage (Her Passive gives her 100% chance to crit 110% damage on slowed enemies, which would then add up to 110%+20% = 130%), or would it add up like: 1.20*110% = 132%?
Or how does this work? Also, is it worth getting critical damage runes for any champions? Maybe Yasuo or Tryndamere?