So I haven't seen any posts about this other than the embedded post here:
[HOLY] Will our 4 piece PVP bonus be nerfed? « 123 ... 9 »
Our 4 piece pvp set has been nerfed. It still gives you a holy power if you cast a 3 holy power Eternal Flame.
If you have a Divine Purpose Proc and cast an EF, you will NOT gain a holy power (You used to be able to, and that's what made our set OP).
It was updated in 5.1
I just wanted to post this since I still see people saying to go 4 piece PVP and faceroll.
And BTW: I switched to the 4 piece pve and I find it strong, but not nearly as strong. The Holy Shock CD is impressive, but mana is very tight on several fights (especially while 2 healing heroic Protectors).