Talk:Damage modifier/@comment-71.45.62.87-20121011074104/@comment-4087140-20121021221406

&uarr; unique passive becomes "worth more armor" as you get more armor. It provides the equivalent of ~11.1 armor, plus another ~11.1 for every 100 base armor you have. Thus, 100 armor yields ~22.2 "armor" from the unique passive; 200, ~33.3; 300, ~44.4; and so on.

I hope this helps with your analysis :).