I totally agree. ppl should make the calculations before. both defense and agility and dodge are good for tanks. the point is how much do you actually benefit from each one so that you know which item you must choose.
that stats above are correct i believe. In order to help to decide how much avoidance you can actually get from block rating I usualy divide it by 4 because the average block value you get from your gear must be around 250-300 and an instance mob hits you frquently for 1000-1200. So every 4 block you actually mitigate the full value of a single swing.
in this case:
Shield of Impenetrable Darkness
defense rating = 22 = 22/2.36 = 9.32 Defense Skill = 0.37% dodge + 0.37% parry + 0.37% being missed + 0.09% (0.37%/4) blocking
which sums up to an aprox total of 1.21% avoiding being hit
Dawnforged Defender:
Increases your dodge rating by 18 <= 1% avoid being hit
So actually you should take more damage using Dawnforged Defender (1%<1.21%) and also you have -2 stamina which is around 22hp which gives u even less life to absorb that damage.
One place where this shield is probably useful is in gruul if you are offtank because since you only get hit ocasionally, the +0.21% mitigation won't have a significant impact. however you must not miss any strike you can get on gruul since you have to be the second on threat list and the DPS is on a timer in order to bring him down before he gets too strong. I would use Dawnforged Defender on gruul and the Shield of Impenetrable Darkness on all around tanking.
there were some simplification made in the process obviously. however since we dont have a simulator this is an educated aproach. you should get this shield if you are not able to defeat nightbane, but if you are, dont mind replacing your shield.
that stats above are correct i believe. In order to help to decide how much avoidance you can actually get from block rating I usualy divide it by 4 because the average block value you get from your gear must be around 250-300 and an instance mob hits you frquently for 1000-1200. So every 4 block you actually mitigate the full value of a single swing.
in this case:
Shield of Impenetrable Darkness
defense rating = 22 = 22/2.36 = 9.32 Defense Skill = 0.37% dodge + 0.37% parry + 0.37% being missed + 0.09% (0.37%/4) blocking
which sums up to an aprox total of 1.21% avoiding being hit
Dawnforged Defender:
Increases your dodge rating by 18 <= 1% avoid being hit
So actually you should take more damage using Dawnforged Defender (1%<1.21%) and also you have -2 stamina which is around 22hp which gives u even less life to absorb that damage.
One place where this shield is probably useful is in gruul if you are offtank because since you only get hit ocasionally, the +0.21% mitigation won't have a significant impact. however you must not miss any strike you can get on gruul since you have to be the second on threat list and the DPS is on a timer in order to bring him down before he gets too strong. I would use Dawnforged Defender on gruul and the Shield of Impenetrable Darkness on all around tanking.
there were some simplification made in the process obviously. however since we dont have a simulator this is an educated aproach. you should get this shield if you are not able to defeat nightbane, but if you are, dont mind replacing your shield.