I wouldn’t use Mac gear to assess any cables.
Interesting concept recommending cables with no regard to how they interface in a system.
So, you’ve shared one experience where a more expensive PC was supposedly inferior (lots of variables at play here BTW) to a “cheaper” $6k cable. Good for you!
Actually, first started investigating cables and connectors in the early 70's. Done literally hundreds of comparisons. I'll wager on a lot more diverse gear, in more locations and on more program, live and recorded, than most. When I left Los Angeles, I filled a 55 gallon garbage bin with old cable.
Overall, I get way better bang by improving my room acoustics, vibrations, reflections, etc.
Far too many start at the wrong end. When searching for a new home before we left LA, realtors asked the missus "Why does he go around clapping and banging and shouting?" Get the room right, most everything else is a doddle. That's how recording studios are built.