06-11-15: ChazroNot necessarily, by any means. From a technical standpoint I see no reason whatsoever to expect two systems comprised of different designs but having equally good musical resolution, and similar sonic characteristics, to necessarily be similar in their sensitivity to digital noise.
Harry Pearson recommended turning off your CD player while playing vinyl 25-30 yrs ago! But I never heard a difference. Either my system or my ears aren't resolving enough I guess.
In addition, keep in mind that digital noise is comprised of a vast number of different frequency components, that are simultaneously present. The magnitude of each of those frequency components, as they may exist at potentially sensitive locations in the system, will vary greatly depending on both the design of what is generating the noise and the path by which it is coupled to those locations. And the noise sensitivity of the circuitry at those locations will be different at different frequencies, and that variation of sensitivity at different frequencies will vary widely among different designs.
My perception over the years has been that many audiophiles make the mistake of conflating the musical resolution of a system, and sometimes also the hearing acuity of the listener, with sensitivity to hardware-related effects. There is obviously some relation, but one that is loosely correlated at best.
The bottom line, put simply and IMO, is that it's all very unpredictable.
Regards,
-- Al