Monstrous power cables

Why?

I’m sitting in my listening chair looking at the over $1K power cable that came with my Running Springs Audio Maxim power conditioner.  The guy I bought the unit from said he auditioned three cables all costing over a grand and liked these the best.

The cables are about the diameter of the cardboard center of paper towels (maybe even thicker) and weighs about five pounds.  It’s absolutely monstrous!  I’ve got a piece of wood supporting it under the receptacle and use other items to support it under the Maxim.

The electricity is carried through my house probably using 14 gauge wire.  What’s the logic using more than that going from the outlet to any component?

I’ve got quite a few power cables of various diameters, the thickest (other than the one connected to the Maxim) being the AC9 s from Pangea.  And to be honest, I don’t think I’ve ever AB’d power cables, having just assumed they do make (at least) some difference.