
Originally Posted by
Frein
No, it's not the same. Yes, you will cap out on ACC, but the tank will in fact never cap out on +Enmity. This is because your ACC needs are based on the enemy you're fighting while the tank's +Enmity need is based on the gear level of the DDs. The enemy's stats do not change, the DDs' stats do.
Yes, and now you're in a rather unpleasant situation. If your full +Enmity set makes you too weak to survive, yet you find it necessary to keep up with DD enmity output, you've effectively capped DD progression. Even if the DDs outfit themselves with better gear, they will not be able to utilize it and will have to hold back because the tank can't keep up. The only way the tank would be able to keep up and allow the DDs to use their new gear would be to wear more +Enmity, but if he does that, he will not survive, so it's not an option.
WoW had (I guess still has) the most competitive MMO PVP scene ever and many times it was correct to wear PVE items to PVP. Likewise, the best PVP sets were often very good (though not the absolute best) for PVE.
There is no content in FFXIV where you'd want to give the tank a couple mins as you're always penalized for doing so. Besides, that's just another way of capping DD progression. If your DDs can't go all out from the get go to shave as many seconds from the fight as possible, what's the point of getting better gear for them? You'd just have to wait even longer for the tank to establish enough of a head start.