User blog comment:ClariS/Escalating Return: Damage Reduction/@comment-4929329-20120816063754/@comment-81.200.170.248-20120819204657

I don't see how warmogs being a good defesive item in any way changes the original point, that % reductions works just as well with mitigation stats as with flat hp. The apply to effective health so a mix of health, armor and mr gives the best result. Which brings us to your examples being completely retarded.

First off no one builds like that, more typical mid/lategame stats for an offtank is something along the lines of 200 armor, 150 mr and 3k hp. Or less mr against some comps such as bruiser top with a low damage jungler and/or against burstier mages (they usually can't waste cooldowns on bursting a tank without losing the teamfight afterwards anyway).

Second. You health example uses about +80 armor and +50 mr while the resist example uses roughly +200 health. That's a much higher investment in resists in the former than in health in the later, which is obviously highly dishonest (either by misstake or deliberately).

Third. A build with 300 armor will obviously have Randuins. With roughly 50% uptime (with is low if the active is used properly) on the debuff that means effective health against autoattacks will be 6550/0.82=7987. So even a retarded resist build will STILL be tankier against the enemy AD carries and many brusers...