I wasted my time watching that video, too. Oh, here are some stock beats from the RC-600. Here are some from the BB. Let’s play them all at the same tempo, out of context, and you can try to decide which machine is better. Utter garbage.
I fully agree on versatility of the BB. What’s more is that you can put any sounds you like in it, if you don’t want to use Goran’s drums. But, the real beauty is, as you note, the ability to build a long track that does not require interaction. I gave up on several devices over the years because of memory limitations or limits on phrase length. The BB gets past all that, and does it in a pedal format that you can easily haul to a gig. There really isn’t a need to compare the two units. They are two pieces of gear fit for different tasks.