It may have been more lethal, although I'm only aware of one direct killing by cops in this case, and I don't think he's right that the only protestors killed this past summer were the two shot by Kyle Rittenhouse. THere was a similar killing in Austin TX, and the cops also assassinated that guy in Portland OR who allegedly killed a Trump supporter.
Even if it wasn't as lethal, the response to the George Floyd protests was more violent. Much like the misdirection about COVID - dying isn't the only negative outcome.
Getting blinded by the cops shooting you in the eyes with rubber bullets, or
beaten senseless, or
battered and getting permanent brain damage by the cops to cite a couple examples are bad too.
Fivethirtyeight compared the capitol riot and the protests over the summer (
link), and found the police were more likely to result to force in the latter case.
No wonder... scroll down reddit/news right now, and the number of stories of cops getting investigated for taking part in the capitol riot is surprising. Police don't like to batter and fight their "brothers" in law enforcement.