So what's it like in a duel situation against a lot of classes?
Watch, and find out.
DT8 Project Feat Andrea Britton - Winter (Original Vocal Mix)
Emjay - So Clear (Stimulate) (Dogzilla Depth Charge remix)
Karen Overton - Forgot the name of the song. >_>
This is what happens when you can cherry pick so many over-budgeted talents like this. It's also easy to see how depressing the DK's damage is, especially once the ghoul goes down.
Watching this isn't necessarily a good way to visit class balance, but it is a good way to identify the issues that DKs are having in PvP.
And as far as not using unholy presence, I'm going to eat my words and say it's not worth it for this type of palystyle at all.
With unholy aura, and a real lack of ability to deal out burst damage at all, and not needing to worry about being caught in GCD, there's really no reason to use unholy presence given those factors in pvp, or anywhere, right now.
AMS, Death grip, mind freeze, ghoul stun via master of ghouls, and IBF are all off the GCD. The only other important ability that isn't is strangulate, which you can often cover by other interrupts. Unholy aura grants 15% movement speed. Being able to spam blood boil, death strike, plague strike, and icy touch 33% faster via the lower gcd, really doesn't yield any scary burst for anyone to worry about. The only ability that you'd want to burst in quickly is scourge strike, which is bugged, or obliterate, which is laughable burst without MoM or GoG.
Thus, unholy presence is actually not ideal in the long run in many situations for pvp, it seems, which is a pretty big let down. Most of our key abilities are off the gcd, making one of the big draws of unholy presence yielding you to be less likely to be caught in the gcd less valuable by a large margin.
I'll let everyone reach their own conclusions after watching it.
By the way: This spec vs holy paladin = never ending fight. We can't kill each other, and we can't die. Ever. I dueled one and finally just gave up after 30 minutes straight.
So I tried this spec in the arena. Here's what I get: