In a single medium-sized event, Wednesday's riot got 5 people killed. One of them was a policeman, and at least three of them were due to violence. So in terms of fatalities per participant-day, Wednesday's event was probably at least two orders of magnitude more violent than the "BLM protests" taken as a whole.
I think that's a significant difference, and one that exposes this sort of whataboutism as false equivalency (in addition to the other issues with whataboutism).