If we assume a velocity of propagation of 0.8 (electricity moves slower than the speed of light in a medium other than a vacuum) we can calculate what distance corresponds to 10 nanoseconds which is about 8 feet. So one way of looking at these claims is that cables are cut so they're accurate to...
Really now, how much R&D do you need to pass a video signal or one from your preamp to amp or receiver to speaker? Marketing yes. A new way of saying the same old things, yes. However, let's not make more of this than there is!