Could be, but then they would be incorrectly labelled FM. Also if the signal was already digital, then they shouldn't have re-encoded it at all. Unless that's impossible due to DRM or something.I think it is because most of them were recorded from digital radio and not analogue. The bitrates are therefore very low.
Here's 2011–2012. I might've missed something, I'll update if so.
2011-07-03 Main Square Festival, Arras, France
2011-06-11 Pinkpop, Landgraaf, Netherlands
2011-12-9 O2, London
2011-12-06 Dingwalls, London
2012-08-28 Parken, Copenhagen, Denmark
2012-09-06 Malieveld, The Hague, Netherlands ← This one is straight from the mixing desk. It's not a capture of a broadcast. Sounds pretty good
2012-09-12 Olympiastadion, Munich, Germany
I'll repeat my edit from before which you might've missed since I wrote it while your were already writing your reply:
Edit: The recording of the Sydney you just uploaded sounds pretty bad. I guess it's an audience recording? I have an MP3 of the radio broadcast which sounds much better, if you're interested.