My advice is to pick a small number of tracks and take very careful notes. Listen for the extremes and pick tracks that are hard to reproduce. This is the best possible way to do these kinds of comparisons.
If, based on your notes, you don't get a general sense of any differences, then that is very good and it suggests the sound profile of the cables is similar.
I have found there is usually a difference in treble or bass that becomes noticeable if you focus in those areas and possibly in terms of nuance and detail.