Warrior - Calculations of Reforging Mastery

I tried some things yesterday and made some mathematical tuning.

I reforged all my gearvalues (preferable the highest rating / dodgerating, because parry gives you chance to critical block and aggro) to mastery.

**Before**

Dodge: 26% (before DR)

Parry: 20% (before DR)

Chance to block: 30%

Chance to critical block: 10%

**After**

Dodge: 19%

Parry: 18%

Chance to block: 42%

Chance to critical block: 22%

Calculation

We have an leakage of avoidance by approximatly 8-9% because of dodge and parry reforging.

__blockmitigation before:__

blockvalue: 0.9*30 + 0.1*60 (critical block) = 33

shieldblockuptime: 33.3% (10 of 30 seconds)

chance to block: 0.333 * 100 + 0.666 * 30 = 53,28%

overall blockmitigation: 0.5328 * 33 = **17.58%**

__blockmitigation after:__

blockvalue: 0.78*30 + 0.22*60 = 36.6

shieldblockuptime: 33.3% (10 of 30 seconds)

chance to block: 0.333 * 100 + 0.666 * 42 = 61.272%

overall blockmitigation: 0.61272 * 36.6 = **22,43%**

Results:

The increase of mitigation through blocking is 5% and the loss of avoidance through the deacreased values of dodge and parry is 8-9%. Because there is no more damageshield-talent, blocking won't make aggro anymore. The single positive effect of reforging mastery is that shieldblock talent which provides you 15 rage per block. Although the reforging gives you a flattened damagecurve and you avoid some damagepeaks, the loss of avoidance is too big in WotlK. If mastery on gear increases more and more, reforging to mastery will make sense because you have two variables to increase - blockrating and critical-blockrating - so if you have enough mastery the mitigation through blocking will not increase linear rather in favour of blocking.

I will reforge to avoidance again today.

Edit: Forget to mention the talent "hold the line" which will also be in favour of not-reforging to mastery.

Sry for my bad English, I'm Austrian ;)