Rebraced Armor or Power Armor: A Tanking Talent question

[Gearbox]

So I used a Talent builder to put together my tanking build and had 2 points left over.

I realized I could plant them into one of two places to mitigate damage:

Shield Tech: Rebraced Armor: Increase Armor Rating by 16%
Advanced Prototype: Power Armor: Reduce all Damage taken by 2%

So I'm wondering, which is better?

Does anyone have the numbers on how Armor works in this game? If we have a working model on armor damage mitigation, then we can figure this out with some simple algebra.

Thanks for your help on this guys.

[Chinua]

I use both. For a tank it seems to me like that the less you damage you take the better. Unless you're putting extra points in CC for PVP, what do you have points in that's more beneficial for you as a tank than even a little more damage mitigation?

I go with Skill Calculator - Star Wars: The Old Republic (SWTOR) Database

I think a lot of people ignore the Integrated Cardio Package. The overall health gain from it is kind of underwhelming, but it's all PTs have besides gear for boosting their health, and I was tired of people complaining about my health not being over 20k, so I did everything I could to boost it a bit.

I think it's more common for people to use Iron Fist, but I don't have problems keeping aggro so far in the end game stuff, and that's all I care about my damage for.

[Gearbox]

Thanks for the reply but I'm not asking for a spec. I'm asking for math.

Specifically: How exactly does Armor work in this game? What's the formula that determines how much damage is mitigated by how much armor?

Does anyone know? Is anyone else interested?