Maybe I was undertrained, but Iris in White 2 kicked my ass. I swept everyone through the game, then I came up to her and she just steamrolled me. I was using stealth rock/shell smash Crustle, SD Excadrill, Heracross (or some fighting type), Crobat, a water type, and something else. But Iris didn't even give me a chance to set up. She just plowed me over. Cynthia was tough, but not too bad for me. Brave Bird Staraptor and Roar of Time Dialga demolished her team for me.