This makes me feel better. I haven't done any PG on live yet because was focused on my cloak yesterday, but I had trouble on my rogue on the PTR, couldn't even beat gold (although to be fair, I only tried like two times) and I don't think I'm a bad player. I guess that also explains why my rogue buddy, who is very good and is rank 10 brawler's guild, was having trouble getting more than ten waves into endless.
Healer gold was easy, though.