I'm in the midst of Kara and was doing some gear checks as to what I want/need and what can be replaced outside of Kara. While looking at the shield options I see that Nightbane drops:
Shield of Impenetrable Darkness
4872 Armor
122 Block
+33 Stamina
Increases defense rating by 22
Increases the block value of your shield by 33
Which is really nice, but close to comparable with my:
Crest of the Sha'tar
4465 Armor
108 Block
+19 Stamina
Blue Socket= 12 Stamina
Blue Socket= 6 Stamina, 6 Parry
+3 Dodge Rating
Increases defense rating by 13
Increases the block value of your shield by 24
While trying to figure out which one is better I lined them up and here's what I'd gain/lose from obtaining the Shield of Impenetrable Darkness:
+407 Armor
-4 Stam
-6 Parry Rating
-3 Dodge Rating
+9 Defense Rating
+9 Block Value
Now of course you can have diff gems in the crest, but I got a +12stam and a +6stam/+6parry gem from a heroic. Next I want to show my calculations for loss/gain between these 2 shields(please correct any of my math if you see something is amiss). First, the facts:
1 Defense Rating = 0.423 Defense
+25 Defense = 1% Dodge, Parry, Block, Miss Chance
23.6538461538462 Parry Rating = 1% Parry Chance
18.9000000000000 Dodge Rating = 1% Dodge Chance
7.88461494445800 Block Rating = 1% Block Chance
Now to calculate what you will gain/lose. Keep in mind, OCD and boredom are a scary combination.. First, how much parry you lose:
6 ParryRating / 23.6538461538462 = .253658536585365358715056514076% ParryChance
So you lose about .25% parry chance. Next, how much dodge I'd lose:
3 DodgeRating / 18.9000000000000 = .15873015873015873015873015873016% DodgeChance
So you lose about .16% Dodge chance. Now, I calculate how much avoidance(not pure) I'd get from the 9 Defense I would gain:
If - 1 Defense Rating = 0.423 Defense
Then - 9 Defense Rating = 3.807 Defense
So - 3.807 Defense / 25 = .15228% Parry, Block, Dodge, and Miss chance
.15228% Parry + .15228% Block + .15228% Dodge + .15228% Miss = .60912% Avoidance
.60912% = What I get from defense on the Darkness Shield
minus
.412388695315524088873786672806% = What I get from Dodge/Parry on the Crest
equals
.196731304684475911126213327194% more avoidance for the Darkness Shield
So overall:
+407 Armor
-4 Stam = 40 HP
-6 Parry Rating = .253658536585365358715056514076% Parry Chance
-3 Dodge Rating = .15873015873015873015873015873016% Dodge Chance
+9 Defense Rating = .60912% Avoidance(not pure/including block)
+9 Block Value
So from what I can tell(provided all my #'s are correct) is that I get 407 more armor, ~.20% more avoidance, and 9 more block value. And I end up losing 44HP(with the Stam talent). So it looks like to me the Shield of Impenetrable Darkness is slightly better.
Really not much point to this post, but hopefully it will help someone out. I hate to work all this out and not share.. /shrug
Questions? Comments? Yelling?
Feel free to reply to my post! =D
~Sin~