User blog comment:Fistful of Force/Fistful of Force's Tanking Guide/@comment-3360527-20110810032350/@comment-81.246.95.178-20110819085308

I 'm still not sure about these diminishing returns and this is why:

If you have 0 armor, you take 100% of damage dealt to you. If you have 100 armor, you take 50% of damage dealt to you (damage coefficient = 100/(100+Arm)). If you have 200 armor, you take 33% of the damage dealt to you. If you have 300 armor, you take 25% of the damage dealt to you.

So for me there seems to be diminishing return when you invest in armor If you have 100 armor, each health point is worth 2 hp with 0 armor.

If you have 200 armor, each hp point is worth 1.5 hp with 100 armor or 3 hp with 0 armor

If you have 300 armor, each hp point is worth 1.3 hp with 200 armor, 2 hp with 100 armor and 4 hp with 0 armor.

So you see that you double your effective hp from 0 to 100 armor => 100 armor needed To double your effective hp from 100 to 300 armor => 300 armor needed.

I don't know, but it looks like diminishing return to me...