The block meta vs the armor meta. Trying to figure out which is better.
The conversation in the shoutbox got me wondering as to what meta was better for me as a paladin tank.
So, I decided to run some numbers on it. I created a little file in my excell clone, put the numbers from my stat screen into it, and had at it.
Assumptions and disclaimers
Only melee damage is taken into consideration.
I used my own stats, buffed with Kings, Devotion Aura and Horn of Winter.
The tooltips given in WoW are correct.
Since I don't have information on all the penalties we get against bosses, I'm assuming a level 80 mob. (If someone could point me in the direction of a cata armor effect formula and a reliable source if we still get the old 0.6% penalties, I would appreciate it, and I'll update this post.)
Holy shield is active.
There's a 5% miss chance for bosses.
Note: The meta's 5% more block value translates into 1% more block value. The base 30% block value is multiplied by 1.05 and then rounded down. Holy shield and the meta do not interact. (Go and check it if you like.)
59.36% physical damage reduction from armor without the armor meta. (about 38k armor)
59.78% physical damage reduction from armor with the armor meta. (about 700 more than about 38k.)
41% block value with the block meta.
40% block value without the block meta.
I took the number 100 to represent the raw damage of the melee swing.
A) I multiplied it by 1-armor%
This step reduces the raw damage by armor.
B) I multiplied it by 1-(dodge%+parry%+miss%)
This step represents the average damage reduction from avoidance.
C) I multiplied it by (block%/ (1-avoid%) * (1 - block value%)
First I calculated the percentage of unavoided blocked blows. Then I multiplied that percentage by the damage you take from those blows.
D) I added (1-(block% / (1-avoid%) ) )* (what I had after step B)
This is the damage from unblocked unavoided blows.
The number I got from this represents the average percent of damage I take from melee.
With the armor Meta, I take 20.49% of raw damage.
With the block Meta, I take 20.52% of raw damage.
According to this, you take about 0,2% less damage from melee when using the armor Meta.
If your avoidance goes up, the effect of the block Meta goes up. Addin 5% to my block, dodge and parry percentages made the block meta pull ahead of the armor meta.
Without an armor formula, I can't change the numbers for armor at the moment - metas are a tad too expensive for me to go swapping them in and out.
I am well aware that this math ignores things such as nonphysical melee attacks, physical abilities that ignore the combat table and holy shield uptime.
I could easily put some warrior numbers in them to see what the effect would be. Just supply me with the numbers and I'll run them.
TL;DR: Go away, if you can't bother reading my post I don't want your opinion here.