Iris is an absolute joke. I'm not even saying this because I like Alder, she just is. None of her Pokemon lasted more than two hits. Even Colress and Ghetsis were harder.
How many hours have you played already?!
I went to the NY event and got it early, so I've had an extra day to play. And about 20. I haven't got a lot to do this week, so it worked out very well.