I think you're downplaying it too much. Of course comparing the event to better organized insurrections makes it look more innocent. But don't forget, the rioters erected makeshift gallows and chanted "Hang Mike Pence" because he refused to overturn the election. I don't doubt the mob would have hanged him given the chance.

The legal and political theory was that the Congressional vote count was a moment of power that could be interrupted and seized with relatively few people. No need for tanks in that case.

Most people attacking the Capitol were unorganized protestors, who were gathered as cover for the real effort, which was quite well organized. It was well described in Congressional hearings; people were convicted of conspiracy; lawyers have been disbarred, etc.