It's pretty simple math really mainly because the 30% is a constant.
Originally Posted by Draxhammer
To break it down:
You have two ways to be able to take more damage from a boss: mitigation and stam. Either you can have more hit points so you take more damage or you can mitigate the incoming damage so that you take more hits but they're just smaller even though you don't have more hit points.
For example, lets say you have 200 hit points and zero percent reduction from armor. You can then take 200 hit points worth of damage.
Now let's say that you have 200 hit points and 50% reduction in armor. This means that you can take twice as much damage so up to 400 hit points worth of damage, even though you only have 200 hit points. This is definited mathematically as:
EHP = hit points/(1-%reduction from armor)
Now lets say you increase your hit points by 100% (double your hit points) you now have 400 hit points and 50% reduction in armor, but you don't still have 400 EHP, instead armor affects the hit points you already have so that you now have 800 EHP, so by increasing stam, you also increased your benefit from armor.
From this you see that the number on top is a constant. If you double your hit points you double your EHP because of armor. Mathematically shown as:
EHP = (C*hit points)/(1-%reduction from armor)
And since in math you can pull things that are multiplied in the numerator out of the paranthesises (the associative property):
EHP = C * (hit points/(1-%reduction from armor))
Therefore the C flat increase (in this case the 30% increased health from the ICC buff) applies to all EHP evenly and so armor and stam are still at their same equivalent values.
Does that make sense?
"If the world is something you accept rather than interpret, then you're susceptible to the influence of charismatic idiots." -Neil deGrasee Tyson
Twitter @Aggathon || @Tankspot || Twitch.Tv/Aggathon