I hadn't seen any of the major incidents last night when I posted that any good fortune we had with decisions was karma for Malcolm Macdonald's blatant dive to win the decisive penalty in the League Cup QF in January 1978. Having now watched the highlights, I really don't think Arsenal had any cause for complaint with any of the referee's adjudications.
Their penalty shout wasn't one, IMO, ours that was given was clearly awarded correctly, and there could be no argument about the sending-off. So I wish I were surprised about this narrative in parts of the media that the Gunners were hard done by. Unfortunately, it's just the type of coverage we've come to expect.