Are manufacturer AC cables good enough?

I read this somewhere today. Definition of Trolling:

“practice of behaving in a deceptive, destructive, or disruptive manner in a social setting on the Internet with no apparent instrumental purpose.”

Read this Dow Jones. It applies to you! 

I've said this a few times on similar threads. The biggest single improvement that I've made to date, most bang for the buck, was an after-market power cord on my amp. Couldn't believe my ears.

It is possible some makers include a quality power cord with their
products? Nelson Pass has explained in past interviews that
he uses his own supplied cords. Now I do not believe he uses
Walmart interconnects. Was he was messing with the interviewer
or did I misunderstand his response. Has anyone else viewed this
same video?

djones.... Clueless clump of cells, I absolutely love that ! Certainly wouldn’t Seek your opinion of cable risers,cards,pastes,speaker cables, pads, or any other Magic Band-Aid product out there. That was funny !

Cheers