Afflatus skills are meant to work like oGCD heals. Misery sets each afflatus to be equivalent to a 225 potency dps skill. Which means that using an afflatus skill is the same dps loss as using an oGCD skill. So from the get go no oGCDs aren't always used first since these two can be interchanged. Furthermore, if the WHM needs to use an oGCD in the first place, weaving it into afflatus means that they are being DPS neutral compared to clipping but they get an extra "free" heal to go along with it. Meaning that if you're going to use an ogcd like assize/tetra/asylum/etc.., you might as well carry the healing for that portion with an afflatus skill since there's literally no difference in DPS loss between using the former single heal or the later double heal.
Obviously double weaving into an afflatus skill is a dps gain over clipping. In every case..
Furthermore, the way misery works means that you can turn any DPS neutral scenario into a DPS gain one so long as you 1) hit more than one target, or 2) use misery under any raid buff, or even better during the buff window.
Because of all the above you will prioritize healing with afflatus over your partner's oGCDs the majority of the time. This is even more pronounced when talking about oGCDs that could otherwise be used on energy drain for example.
The caveat is that this only holds true if you use misery in the first place, so afflatus no longer retain their priority if you're nearing the end of the fight and won't get the misery to go along with it.
Afflatus skills would still be used in optimized play even if they didn't do anything other than feed the blood lily, so it's only natural they would be higher priority than other heals.
