Well just be assured that this is master quality!In this instance it would be useful to know that the download is closer to the master than what's available on the DVD. Hence the need for accurate information on both the disc and the download!
As I may have mentioned before, the DVD could have been encoded/authored with 6 channel 48/16 LPCM audio and still have been spec compliant...
TBH knowing the number of variables having done that job, I always worry that the DD encode could have been done by a lowly-paid intern.. Hence my desire for lossless. Plus, those gathered here tend to have systems that merit it.