Tanks, please use strength gear.. :(

[Sapphidia]

Bonuses multiply with bonuses, that extra 20% + the extra 15-20% you get from darkside and maim or the extra 30% you get from FoF makes a HUGE difference.

You're assuming that a tank with some Vit wont use Maim/FoF/Darkside. Of course they will. 15-20% damage from Strength accessories is 15-20% damage. Not more. The tank's rotation wont change. They'll still use those skills regardless of stats.

5 seconds is the difference between full HP and dead. Your full HP does not help

If the extra Vit you gain changes it from 4 seconds to 6 seconds that's a whole extra GCD of damage a healer could do from a quick swap to cleric stance. And you CAN use cleric stance on big pulls. I have no issue with tanks pulling multiple packs of mobs when im healing on scholar, with a prepull shielding you can easily get a quick rotation of DoTs to Bane. Unless your tank is toting 14,000 health.

I'm not advocating full Vit. I'm just saying that a LOW GEARED tank trying to make big pulls will be hindering things if they go purely strength and dont hit a minimum threshold of comfortable health that means they can stay alive for 5-6 seconds without heals rather than 3-4.

And on the subject of paladins, they have next to no useable self healing on huge pulls and do far less AOE damage than other tanks as most aoe enmity comes from Flash which does no damage. They only have a crossclassed Bloodbath and Flash of course wont heal them from this. Bar Circle of Scorn on a 25 second cooldown, paladin aoe damage is limited to just cycling single target attacks. There's a reason that in 2.5 most paladins doing speed runs in instances tended to stack pure vit for the gigantic pulls, because they did minimal damage compared to the AOE of the healer/dps, so may as well let the healer DPS more.