OP really said lemme post my own thread on the bnet forums to back my own claims up ??????
People really think this is going to make a big difference down the line and further on into the expansion?
It's not. It's really not. Obviously some spells are gonna sim better than others in solo content, group content, single/multi target, raiding, mythic, pvp.
Regardless of these spells, unless you are playing and are going to be in a specific percentile of the player base that revolves around these. It does NOT matter.
Choose what covenant is best for you. Not for your character.