Originally Posted by
tibbee
Some of the other things you have to consider with AG vs RST
-AG requires burning a LOT of mana to use to full effect, while RS doesn't require mana consumption over and above the spell rotation you'd use with or without the talent. That extra mana used on AG means that you will likely need to run at a higher Spirit level, and also potentially means that you will have to throttle your CH usage during the fight more because of the extra mana consumption.
-AG is at its strongest when the raid is stacked and on things like Megaera rampage. If the raid can't be stacked in a Healing Rain, AG output drops from what we see on fights like Megaera on live, and won't likely account for up to 20% of your output.
At 10% output from HST (excluding the 2pc proc), you should gain about 13% extra output from RS. AG has the potential to be higher - especially on stacked fights, but not needs to be higher to warrant the mana dump. I don't think it's clear cut that AG > RS for 25 man; it's probably going to be very fight dependent. I think that both are very well balanced talents, and that even Conductivity on a 100% stack fight is also viable.