Well from a strictly personal experience, I was scheduled to DH on TSA one day out of LGA and literally every single outbound flight that TSA had that day was cancelled. The departure board tends to show TSA cancellations rather frequently as well. As for Mesa, anytime I fly through DFW I witness the carnage of an endless string of angry passengers first-hand.

So no, my opinion isn't from crew room gossip. The performance that I've witnessed for AAG has been horrendous.