Quote Originally Posted by Raven2014 View Post
The issue with Tenacity is two fold:

First problem, tank has too many defensive CD already, and all the TB mechanic has always been about them using their CD correctly to survive. Tenacity never really played a role in determining whether the tank live or die to a buster.

That leave Tenacity as a damage reduction stat is only meaningful for AOE and Auto attack. Tank pretty much just shrug off the former, and auto-attack come down to one thing: how often does a healer has to heal you for auto? Basically, it needs to reduce the damage from auto enough that it will save the healer one single target heal. The issue is ... healer's single heal are very strong, so the damage reduction have to be massive as well, otherwise all it does it adds overheal on the healer, which is the second problem.

Frankly the tank design in FF14 does not really lend itself to a passive "tank" stat. Pretty much all of their defensive cool down are duration base instead of hit base (like TBN). For example, in dungeon, with proper CD tank can have almost have 100% up time on their mit unless the DPS is really bad, and thus passive damage reduction is negligible.
Anything that adds stacks though... if the gear no matter what you do got some of it on then it can really hurt either other than a bit more protection and a bit more damage?