Yeah, the same goes for a few classes. My balance druid feels really awkward as well and elemental shaman with that horrible AOE damage. Not a huge fan.
There are others that feel better though, like mage and warlock.
I guess 116 is not that high a level though so your priest might start performing better at max level. Hard to know though.
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You're quite welcome. Again though. We can't really test maxed out characters with really good gear. What you read here right now might give you a somewhat unfair picture of how your class will actually play once BfA is out and you start getting the good stuff from raids and m+.