Originally Posted by
Netherspark
I don't see Service being that great on those fights with damage bonuses. Let me put it this way:
Service has a 2 min cooldown but most dmg bonuses happen more often than that - so you can only take advantage of every other bonus at best, whereas with Supremacy/Sacrifice you can take full advantage of all of them.
So on Jin'rokh for example, you can use Service on maybe 2/4 pools, meaning you get extra damage on those 2, but you lose damage on the other 2. Is the damage gained during those 2 phases worth the loss of damage on the other 2 phases? Possibly for demo using a GoServ: Felguard, but almost certainly not for the other specs.
On Primordius you can have 20 seconds of burst with GoServ, or 60 seconds sustained damage with GoSup/GoSac, guess which one ends up being higher?
My point is that short term burst often isn't as good as full time sustained damage, it may look better at the time but those numbers will even out over the couse of a fight and often end up being lower overall. If you don't really need the burst (Spine of Deathwing for example), you're likely to end up loosing overall damage.