ubu:
Looks like it´s the same material:
-track list is exactly the same in the Storyville release: same 61 songs and in the same order. However, total playing time doesn´t fit.
-regarding recording dates, the Storyville is also from 1935 (13 tracks), 1938 (14 tracks) and 1939 (15 tracks), and the last 19 tracks, acording to liner notes, "...are generally believed to have been recorded c. 1945. However, a copy of Standard 191 bears the following legend, in ink: "Production Test 1/22/44". Therefore, if this notation is accurate, these performances took place on or before January 22, 1944."
The Storyville doesn´t mention source and remastering process. The only mention is "produced for CD release by Anders Stefansen". And the release date is 1999, three years after the M&A you brought.
To these ears and for that time and source, the Storyville has superb sound.
Hope this will help!