Pharmercy already dominates ps4 grandmaster level games. It's pretty well known that it's an op strategy on console.
I know http://imgur.com/a/tL5mo
I have never played against a top 500 Pharah "main" without them getting pocketed by a mercy. If you're a top 500 and can't win a game without a pocketing mercy, just let your rating decay and uninstall, please.