Tank Mitigation vs Tank DPS.

[YojimboM]

This is completely false and i have already pointed out why.

Between tenacity and D-hit melds there is 1.6 percentage point difference in the damage multiplier, tank damage makes up for 9-11% of the total raid damage. This number will at best decrease the time needed to finish duty by maybe 0.16%, and because it is so random and unpredictable you could as well just deal as much damage as tenacity tank, since 1.6% damage increase on the rng driven stat is likely not going to happen all the time.

So what you are basically saying is, killing boss 0-0.16% faster is going to make it easier on healers than 4.3-5% mitigation increase, which is absurd statement. It wont be even noticed by a parser.

I have no idea where you're coming up with those DH numbers from, and you're entirely excluding crit for some reason. Tank BIS this tier have approx. 1300 DH, which is a 3.8% bonus, and around 3500 crit, which is a 14% bonus. Remember that damage stats stack multiplicatively on top of that. (http://theoryjerks.akhmorning.com/stats/crit/, http://theoryjerks.akhmorning.com/stats/dh/)

If you brought tenacity to absolutely maximum levels possible right now (3582), the damage and mitigation bonus would still only be 9.7%, not even close to the combined crit/DH bonus. At more realistic levels (around 2000), you can expect around 5% both ways like you said, almost three times less effective than crit alone. (http://theoryjerks.akhmorning.com/stats/ten/)

This isn't even beginning to go into other details, like the number of raid buffs that favor DH and crit (Battle Litany, Battle Voice, Chain Stratagem, etc). Overall, DH and crit are both much more effective than Tenacity. In short: everything you've said about the comparison in DPS increase is wrong.

Tenacity might be useful as a bleeding-edge prog stat currently, as I've heard of at least one E4S clear where a tank with 3000 tenacity saved a run with only 3k HP after mistiming a Shadow Wall, and even in that case it was due to a player mistake and not required. At absolute best, Tenacity is padding for progging where a tank might be expecting to mess something up. In any other case, using Tenacity is essentially preparing yourself for failure, because if it benefits you in any large amount it would ultimately be due to failed mechanics.

[Nedkel]

I have no idea where you're coming up with those DH numbers from, and you're entirely excluding crit for some reason. Tank BIS this tier have approx. 1300 DH, which is a 3.8% bonus, and around 3500 crit, which is a 14% bonus. Remember that damage stats stack multiplicatively on top of that. (http://theoryjerks.akhmorning.com/stats/crit/, http://theoryjerks.akhmorning.com/stats/dh/)

If you brought tenacity to absolutely maximum levels possible right now (3582), the damage and mitigation bonus would still only be 9.7%, not even close to the combined crit/DH bonus. At more realistic levels (around 2000), you can expect around 5% both ways like you said, almost three times less effective than crit alone. (http://theoryjerks.akhmorning.com/stats/ten/)

This isn't even beginning to go into other details, like the number of raid buffs that favor DH and crit (Battle Litany, Battle Voice, Chain Stratagem, etc). Overall, DH and crit are both much more effective than Tenacity. In short: everything you've said about the comparison in DPS increase is wrong.

Tenacity might be useful as a bleeding-edge prog stat currently, as I've heard of at least one E4S clear where a tank with 3000 tenacity saved a run with only 3k HP after mistiming a Shadow Wall, and even in that case it was due to a player mistake and not required. At absolute best, Tenacity is padding for progging where a tank might be expecting to mess something up. In any other case, using Tenacity is essentially preparing yourself for failure, because if it benefits you in any large amount it would ultimately be due to failed mechanics.

I am not advocating for making maximum tenacity and take the maximum possible tenacity from equipment, because for most of the players they will not have a choice, since ilvl is the first most important thing to focus on as a tank.
I am just comparing melds because here is where the choice we really have, tenacity with mix of D hit where you cant put more tenacity against pure D hit melds.

Right now the difference sit at exact 1.7% on damage and 4.3% mitigation, with few d-hit melds its basically about 1.6% and 4.0%.
My advice, melds whatever you want, it will still give you something useful, tenacity is not useless otherwise it would be buffed.

[YojimboM]

I am not advocating for making maximum tenacity and take the maximum possible tenacity from equipment, because for most of the players they will not have a choice, since ilvl is the first most important thing to focus on as a tank.
I am just comparing melds because here is where the choice we really have, tenacity with mix of D hit where you cant put more tenacity against pure D hit melds.

Right now the difference sit at exact 1.7% on damage and 4.3% mitigation, with few d-hit melds its basically about 1.6% and 4.0%.
My advice, melds whatever you want, it will still give you something useful, tenacity is not useless otherwise it would be buffed.

You still aren't reading the website I linked correctly. The difference is far higher than that. And DH is not the only thing you'd meld in the place of tenacity, crit is a higher gain than DH in most cases so you'd optimize to a breakpoint for that first and then fill in DH. You're literally cherrypicking random numbers to try to make some kind of comparison that favors tenacity when, in fact, tenacity is never favored. Tenacity is not going to save you unless you go to extreme amounts of it (which would be it's only purpose, "less healer pressure" is a mathematical red herring), and in content that ~85%+ of the playerbase runs (DF content, 24-man raids, 8-man normal raids, etc), tenacity would be entirely useless for any of them in comparison to proper crit/DH melds.