PLD can deal decent dps since 3.2 now and in my opinion it's far from being the best at mitigation, i would trade the defensive magic CD of drk anyday since a good portion of tank buster are magical, like A8S it's cool to sheltron the double rocket punch but i think it's even cooler to mitigate 30% of the single or double flamethrower you'll take.
Not to mention that hallowed ground activation is meh compared to living dead or holmgang.
Dps wise paladin is just fine as long as you don't shield oath 24/7. You just have to git gud i would say.