Voting ban. Its probably a bit too late to matter, but here's my reasoning.
With a boost, Dragonite can easily overcome most of its supposed checks, barring Weavile and Rockceus. At +1 even PDon is not a clear answer:
+1 252 Atk Dragonite Earthquake vs. 248 HP / 8 Def Groudon-Primal: 258-304...