I haven't seriously compared the Qobuz and Tidal MQA. I only know a little bit about MQA and not enough to fully understand or how it compares to actual high res on Qobuz. You probably saw... Qobuz ad says "better than MQA" lol. Not sure if it true, but could be convincing. When I listen to MQA, though, I think I can understand why it is gaining traction. And MQA implementation on the Bartok is quite special, arguably one of the best I believe.
I agree I had not liked mqa on the chord dacs they don't do the unfold. Now with the Bartok I find MQA to sound really good. I am pleasantly surprised.