The first time I listened to that video, I hated the lack of direct patch-to-similar patch comparisons - “warm pad” vs. “warm pad”, "brass stab’ vs “brass stab”, etc.
But I eventually came to appreciate that there really are differences in the characters of these two synths that come out after repeated review of the video.
Some folks cite that video as having “sold” them on the OB-6. For me, it presented some things in the Prophet 6’s favor, as well as the OB-6s - no “winner” for me.
I was also inspired to check out more demos of the Pro 2 as well as revisit some that I heard before. That’s actually my top choice now for a DSI synth.