Anyone who claims that the audio is better in this cable has no understanding whatsoever that the audio is /also/ folded into the digital signal.
It is not some analog signal being sent along for the ride.
Further, while it is bi-directional, it is *NOT* in any way akin to a packet based network, where the number of packets can lower with the presence of noise.
Now the line discipline for encoding this stuff is indeed very interesting, but far below the level of "better vs worse". If any HDMI cable basically works at all, it'll work just as well as this cable. I've got far too much low-level DSP experience to fall for this one.