Well, I think most people at most universities remark on things they like about the course and things they don't like about the course. I think the point that might have been being made was that you seemed to be saying everything's amazing about the AA, which made it read like PR. I can tell you plenty of things that I think suck about Cardiff.
The other issue is that its very hard for you to know how great the AA is vs any other university course, as it is for me to know how good my course is vs. yours. They are so widely different it almost makes it irrelevant. My impression of the AA during my three-weeks:
a) studios on tcr are noisy, badly ventilated and lit, and way too small. quite an unpleasant place to work - i couldn't have coped with being there for much more than 3 weeks.
b) I thought the guy in the computer room was a moron - very chippy and unhelpful. In fact, most of the staff in bedford square during the summer school seemed to project the air of "you should be thankful we let you pay £1K to come to this" every time i asked any kind of question as to why something wasn't working or indeed, for any informaiton about the programme. I thought it exuded an arrogance which really put me off the place.
c) For me, the course would be way too conceptual - i looked at the year 1 work and the year 3 work, and i didn't understand hardly any of it. moreover, i don't think that half the creators of that work did either - there were an awfully large number of laser cut triangular shapes going on, not a huge amount of sketching or general concept development in what i saw. form-making, essentially.
on the positive side, bedford square is a great building, i liked the cafe and terraces, the bookshop and i thought tris (is it?) working in the workshop and the other guy were great, very helpful, and the workshops you have are decent. Also the guy in the model making room, very sound.
ultimately its horses for courses, and the aa course wasn't for me. obviously we know its a decent school - it should be when you're paying that much, and it has a strong reputation. there is good and bad at all schools.