So, to review:

Target Armor after ArmPen = (1-ArmPen %)*Target Armor before ArmPen

Then damage reduction from armor is calculated:

=Armor/(Armor+15232.5)

Thus, given 3 different targets: Priest (2036 armor), Rogue (5768 armor) and Prot Warrior (24768 armor). If you have 10% armor reduction, you reduce their armor value by 10%, so Priest goes to 1832 armor, Rogue to 5191, Warrior to 22291. After you determine the difference between the initial damage reduction to the new damage reduction, a 10% armor penetration would result in a damage increase of 1.2% against the Priest, 2.8% against the Rogue and 6.6% against the Warrior.

Another thing to notice is that even with 10% reduction, you’re not going to a 10% damage increase.

Arm Pen has been changed to % here and i’m kinda lost are we -% from their % of dmg reduction or is it -% of the % they have?

1. they have 50% i got 10% armPen = 40% will be blocked
OR
2. They have 50% i got 10% ArmPen = 45% will be blocked

Thx and great article btw :)

Cheers

They did this for the mage Ice Block.

they did this by giving cat druids – the yiffy version of rogues – feral leap. no one told them they HAD to go bear form and do feral charge just to reduce downtime. and they don’t even need the mobility fix.

they did this by fixing shadowmeld to essentially be a stationary vanish.

and Cloak of Shadows used to be the 41pt Subtlety move as well. so what’s your point? baseline ShS would fix our mobility in every spec and back up the whole “let’s make all 3 trees pvp viable” garbage blizzard is smoking. it doesn’t even work when rooted either, so what’re you complaining about?

http://forums.worldofwarcraft.com/thread.html?topicId=14697492760&pageNo=2&sid=1#27

Blizzard owes Rogues more DPS.