There's an additional factor accounting for (most if not all of) the SQ difference that's not be considered, which is the RFI and EMI noise traveling with the bits that
1) alter the timing of the bits arriving at the streamer/DAC (i.e. jitter)
2) enter the DAC (along with the bits) and contaminates the DAC's analog
stages
Introducing an audiophile switch (like the Uptone EtherREGEN or better), and upgrading the ethernet cables (Supra Cat8 or better) from the cable modem to the streamer/DAC will yield DRAMATIC improvements in all SQ aspects.
These upgrades effectively eliminated the delta in SQ in my system.