Streamers: Digital Sound Output - Chromecast Audio vs Bluesound Node 2 vs Cambridge CXN

Do all digital streams sound the same? Will I get better sound quality if I upgrade from the optical output of the Chromecast Audio to the optical output of the Bluesound Node 2 or Cambridge Audio CXN? Aren't 0s and 1s, just 0s and 1s? The Audiofool compares the digital output of these 3 streamers in this quick video.