The Jerks on PSN (without mics) will go out of their way to show they are jerks by sending you message after message of meaningless shit, but even then it's rare. The jerks with mics are still few and far between. As for the theory there is less asswipes on PSN than XBL, its not entirely true, its less obvious what kind of people you're playing with until they make it blatantly obvious.
Sometimes I think it's better than PSN didn't come with mics.
Sometimes I think it's better than PSN didn't come with mics.