> Their numbers look too good to be true

Why? I have not seen anything outlandish for a NN implementation (vs a NN simulation).

> can pull off the error correction

There lie the issues that have not been mentioned, the solutions not explained. Analog computing means: * costly digital-to-analog at the input and analog-to-digital at the output; * sensitivity to environmental conditions such as temperature; * signal dispersion hence the need to boost it in the path.

Maybe checking the patents they registered?