I would only partly agree with this statement. If the speaker cable is a simple, multi-strand OFC product, we are dealing with a generic/commodity. So, I would expect 14 gauge OFC by MediaBridge to be very similar to 14 gauge OFC by Monoprice.
But, with exotic cables, are they merely dressing up copper wire to make it look pretty or are they doing things that actually color and change the sound? For example Music Interface Technologies (MIT) puts an interface (filter?) in the middle of their speaker wires. Many audiophiles buy this or that speaker cable because they are using it to tweak the sound of their system. And they try to match warm sounding cables with bright sounding speakers, etc. to tame the speakers. Or, they will say, do not use this or that amp with those speakers. How much their opinions are real or imagined, who knows? Supposedly the speakers I bought were "too bright" for some ears. I did find them brighter than my old JBL bookshelf speakers, but definitely not "too bright." That is good, because I could not afford to buy some $2,000 MIT speaker cables to warm my speakers down.
I want my speaker wires to accurately convey what my amp is doing and input that into my speakers. I do not want my speaker wires to dial in, tweak, nor color the sound. There is much more control buying an eq.