Just done some tests and although I only gain 500 dps on a target dummy (11% increase) you know fine well that when we start to do equal dps to mages and warlocks, the QQ tears will fall about 'amg you could wear an entirely different set of gear in an entirely different spec and heal' and we will be nerfed.
Shadow priests enjoy the ptr, this is like the time they gave us 25% damage after dispersion, it won't last when the QQ starts. Shame really as we are perfect now