Are manufacturer AC cables good enough?

Why not read their warranty and give us your legal opinion?💋💋 

It's a pretty standard warranty they gave themselves enough wiggle room.

To try to judge the real from the false will always be hard. In this fast-growing art of 'high fidelity' the quackery will bear a solid gilt edge that will fool many people" - Paul Klipsch 1953

Hey that’s exactly what Norman Bates says in Psycho! It’s really a f-f-falsity. 😬

dowjones, Some observations about that link...

He really didn't get into how they actually sound... Weird, unless he doesn't really care about sound quality

He did put "audiophile cable" in quotation marks... which is accurate because what he was testing was far from a high end power cord

His set up is not optimum. For starters, that power strip everything is connected to could easily mask any real measurable differences. But even as *ssnine as his set up is, there was a measurable difference with the $20 "audiophile" cord 

I get why he did the article but don't know why any audiophile would bother putting any stock in his outcome, which apparently you do since you linked it.