And with that weaselly & evasive answer, followers of this thread realised it was Game Over.

If electrical equivalence of two cables can't be established from their respective L,C and R then the proposition that two electrically equivalent cables sound alike is pretty worthless.

Yes, one piece of QED 79 strand cable might sound like another piece of QED 79 strand. Beyond that, it would seem, all bets are off. 

My work here is done.