So I did a Qobuz vs Tidal face-off about two months ago on a variety of tracks - and found that Tidal had more detail, more resolution, and sounded less compressed with everything I tried. Tidal had higher highs and lower lows. If Jay is right and it varies track to track which is better, then maybe I didn't try enough tracks, but Qobuz for me was inferior in exactly the same ways with every track I tried.
But my case may be much different as I'm based in Canada. Qobuz came to Canada just in May for the first time, and they did so by acquiring an existing company - I believe a small streaming service. So it's possible that what I hear through Qobuz in Canada is not the same as what folks in the US hear - different data centres, possibly even different files.