Guild Wars 2

So i noticed that adaptive armor and hoelbrak runes has a 20% condi reduction but the question is do they stack to say 40% ?

Mathematically on some conditions it does stack

Lets take burning. Assume you get hit for 4 seconds of burning at 400 Hp per second damage.

Without AA and without Hoelbrak and no condi cleanse you would take the full 4 seconds so 4×400=1600 damage.

AA (alone) would reduce the damage by 20% so you would take 0.8×1600=1280 damage

Hoelbrak (alone, no AA trait) would reduce the duration by 20% so you would take 0.8*4 sec=3.2 sec of burning which is 3.2*400=1280 damage

Now combined AA with Hoelbrak. First of all you would reduce the duration by 20% so you would take 3.2 seconds of burning.
Then you would take 20% less damage so 0.8×400=320 per second damage

Combines that 3.2×320=1024.
This is a 36% reduction in condition damage. Not quite stacking but pretty close.

No cause its -condidamage incoming and – condiduration .

Thx , but now that leads to the second question whats the difference between condidamage incoming and condiduration ???

Is incoming condi the same as just plain condi damage ?

Damage is how much it hurts you. Duration is how long the Condition stays on you.

I see thx a lot guys

Hoelbrak runes do stack with Mecha Legs trait.

Hoelbrack -20% Condi Duration

Mecha Legs -33% Condi Duration on : Chill, Cripple, Immobilize.
Together you have a -53% Condi duration on Chill, Cripple and Immobilize specifically.

Damaging conditions still receive only -20% Condi Duration from Hoelbrak