When I first battled the Elite Four (and I swear my game is rigged), my attacks missed every single time (no exaggeration, Volcarona missed three times in a row before being knocked) and every move the opponent used was a Critical Hit (OHKO on both Excadrill and Haxorus; took two hits on Lilligant, her first turn was wasted on a Quiver Dance and her Petal Dance missed on the second turn).
I was very annoyed and decided to do homework, instead.
When I finished the assignment, I went back to the game and sweeped the E4. :3 Though I would still call the first attempt just bitter luck.
Avatar: In memory of ieatwyverns <3
Thank you, Vasco <3