ATC's are awesome, I assure you that!
Please don't read too much into my experience above. It's a personal thing. The ATC's may well sound better than the PMC's bass in another room. The only way to tell is to try them in your own room, with your own music. The differences between them may not be very much at all in another situation.
Who knows, maybe I'm wrong. I don't know what's the correct sound, all I can say is I had a lot of fun. That's all. Knocking either make is really pointless. They're both awesome!