I forget where it was (though I think it was somewhere here), where someone mapped out the mitigation available through cooldowns and passive attributes to the three tanks, and found that Paladins mathematically actually have the worst mitigation options of the three - and to my knowledge, it's been this way since the Warrior buffs of 2.x. And that just sits funny with me when I remember Yoshi talking about Paladins as supposedly the most defensive tank, and the tank who takes the least damage. Maybe if they sit there and spam Stoneskin between each combo that's true, but that's an awfully specific circumstance.