This is actually a very interesting thread imo..
IF one accepts the Engineering theory (fact?) that ONLY resistance is of import in an Speaker (power) cable.
Then Slight variations of Resistance should make differences.
In real Life they clearly do not.. OR more plausibly are below the Hearing/awareness threshold of us Audiphools.

That said... It does cause head scratching as to the often excited conversations re the attributed Goodness of some speaker wires over others