Could be none of the above. Unless the two were compared with a controlled blind test it doesn't tell us anything. To me Quboz sounds better than a flash drive connected to the streamer, again unless I did this comparison blind it tells us nothing to further our knowledge.Please explain exactly what you mean by "controlled blind test" and how one would be able to adequately make such a comparison using a file streamed from Qobuz, versus a file on a USB flash memory.
Unless you can prove the files are identical using a checksum hash such a comparison is actually impossible. I don't think you've thought this through much.