When dps-ing in blood presence freezing fog tends to mess up my rotations. I simply don't have enough time to RP dump two frost strikes at the end of my rotation if I use freezing fog. That means it is a trade of between an obliterate and a frost strike. In a 0/44/27 setup you don't spec into annihilation because Obliterate isn't part of the dps rotation. Having three points in it just for use during HB procs and 3% extra crits on specials is not worth it imo.
The second argument is that Obliterate does low damage in DW even with the sigil ( and Ideally you would have sigil of haunted dreams pre 3.08 and the Icy touch sigil post 3.08) , lower then frost strike or Deathcoil.
Adding to that is that frost strike has more crit chance when talented.
After the patch ( if I don't spec back to 2 handed frost because of the Killing Machine and gargoyle nerf) it will probably be better to dps in unholy presence because you can dump about 4 frost strikes a rotation instead of 2. Then it IS benificial to use your freezing fog for free HB's because you have the time to use those runes for other abilities without it screwing up your rotation. But even then Obliterate is sub par to other dps abilities like icy touch in this spec.
In raids ( without unholy strength or mirror of truth procs ) I can get between 4.5k and 5.5 k icy touch crits. That's more damage then a slow mainhand obliterate crit for only one frost rune. Then you still have an unholy rune for a plague strike or a corpse explosion.
I'm pretty pleased overall with the DW atm, I did more dps then my two handed frost spec with worse gearing ( not enough hit rating to reach spell hit cap and naxx 10 equivalent mace and sword) and it's fun to play. I still need to improve my rotation timing in blood presence and be more selective of when to use the gargoyle.
But I'm not too optimistic for DW after the next patch. Turning KM into a 5 PPM ( that's 6 guaranteed crits evey other minute for HB,FS or IT if you talent Deathchill ) ability and halving the duration of gargoyle + nerfing it's dps by 20% is going to hurt DW alot. I'm getting far more than 5 procs per minute atm resulting in sick aoe dps.
Two handed frost is getting buffed quite substantially in terms of glyphs and I believe the KM PPM is also a slight buff for that build. But we'll see, If DW continues to be as good or slightly better than 2 handed frost next patch I think I'll stick with it. Either way I'll be very happy to be able to dps in unholy presence in either spec. Blood presence makes me mash my buttons too much
