Look at it this way too. If Pass decided the Nordost Odin PC sounded the best with those amps it would double the cost (11K for the Odin PC). Then that may not be the right cable to match with the rest of everyones system. Sales would plummet.
The Ching Cheng power cords are not only less expensive than
the cheapest audiophile cords, they're also good enough
that Pass is willing to ship them out with $10,000 amps.
If they made equipment sound bad, that simply wouldn't be
the case.
That said cables IMO should be the last tweak done to a system once you've settled on the best you can afford.