Read my post he commented on. You are reading it out of context.
Ah, that explains it, I was confused there for a second.
That difference can easily be made up by abnormalities in the fight, movement, spec preference by a certain boss. Or simply because you feel good playing a certain spec.
Of course there are abnormalities but usually all specs have to take these into account.
I'm not saying that because you sim a spec 2-300 dps under another you should discard it, of course you play what you feel good playing - just saying it will show in a raid on the single target encounters.
However the ghoul for unholy is simply not available or dies a lot on nearly 50% of the ulduar bosses, if not micro managed.
I play 2H unholy myself too and I really can't see where a perma ghoul can be a huge liability at all.
Micro-managing your ghoul is part of the 2H-UH playstyle and I generally just assume that you do this to keep it from dying (I still can't see it dying on 50% even when not microd). I don't see where the managing generates a noticable loss in DPS either.
Patchwerk sims are really nice to compare specs head on, but realistically unholy really suffers on a lot of fights, and though i agree you should not assume that position, you should most definitely take it into consideration.
Since this is the DW-thread I can just say that I disagree that unholy suffers that much, and even if I would like to know what kind of fights you're talking about this is not the place for that.
On this I both agree and disagree. IMO we should compare specs with ideal conditions as basis.
However that does not mean we should discard non-perfect raids. Because the only way you'll get a perfect raid is if you have those buffs, which only happens in 25 man usually.
I just assume we're talking 25 man here but I partially agree with you I guess.
If everyone played the exact same spec to maximize personal DPS on every class this might just end up with a raid with no haste and/or AP and/or spell damage buff - which probably would be an overall dps loss for the raid.
But fact is people don't discard these specs or talents anyway; blood specs bring abom might since it buffs themselves anyway all deep unholy builds bring EP and (most? i've never actually played frost) frost builds have the possibility to easily swap talents to bring IIT?
Point being that generally all the buffs should be there and if not you can always spec into it for your own guild. This is personal though and that is why I reacted to a statement such as "X spec is therefore stronger than Y spec because it brings Z buff".
I think its also (this is more a general remark) very unwise to assume a position where people will either pick unholy or frost based on dps alone.
As I stated above I obviously do not assume that all people will spec whatever spec comes out on top on the dps-meters (why on earth would i play UH 2H if so).