- Doing big pulls as PLD, go VIT, STR won't do crap for you. During bosses, switch to a full STR set and use Sword Oath.
- DRK is whatever you want for big pulls, they actually put out damage.
- WAR, you want full STR ideally. Bloodbath gets that much stronger, and your damage obviously goes up which is no joke to begin with.

You should just spec STR on all 3 tanks and switch your accessories as needed. No matter what, wear STR accessories for bosses. VIT doesn't do crap unless your healer doesn't even use Regen/AB and just goes AFK. Even more so for SCH.