The MB system is Level 3 on mapped highways. This means you can legally not be paying attention - reading a book, watching a movie, doing email, etc. So yes, there is a HUGE difference between Tesla and MB.
I didn't watch the video (I'm not giving clicks to trolls) but just from the thumbnail above, the MB shouldn't work on surface streets. It is meant for highways. Also, I tried the free FSD trial a few times in my HW3 MXP and I had to intervene pretty often (not to mention it tried to go 45mph on the 25mph road to my house).