Am curious....

Your sig only lists C10 as a Sooloos source component. What is your audio path there ?
It looks like your Roon path was Mac to USB/SPDIF converter and on to ???. This won't be in your Sooloos path I expect. Both MAC and converter will be contributing some noise and or jitter.

My hunch is that there are quite a few variables in the comparison.

Anyone using networked end-points (MS200/MS600 or ID40/ID41) tend to report that the SQ is the same or indistinguishable.

Rgds,
Nick