To me subjectively at the time, on Chord DACs at least (both Dave and the Mojo both of which I owned), it was quite apparent that MQA encoded tracks were not quite Redbook quality. Never got round to exploring it more objectively given dCS supported decoding from quite early on.
It sounds amazing. I also listened to the Qobuz version with the F1 filter (with F3 it’s unlistenable). It doesn’t even come close to the Tidal MQA version with F3.