This is a comments thread for the following album: https://downloads.khinsider.com/game-soundtracks/album/battletoads-and-double-dragon-snes-1993
The reason why is because the Xbox sold horrendously bad in Japan, three times in a row in fact. Instead they kinda gave up with the Xbox in Japan and occasionally partner with Nintendo either via rereleasing old Rare titles onto NSO or adding Banjo and Steve in Smash.Cool soundtrack!
But it's strange that it was re-released by Xbox Game Studios for the Nintendo Switch Online (because y'all know Microsoft (Xbox) and Nintendo are rivals). That gets even stranger as the game was published by Sony Imagesoft for the PAL Super NES.