When the first film in this live-action trilogy of Rurouni Kenshin is among the very best adaptations yet of an manga/anime property, we can forgive any weaknesses in the whole.
I thought it might turn into a way of finding redemption along the way - an alternative to self-abuse and violence - but it seems Jessica Jones is about subverting that idea as well.
The way Jessica Jones subverts what we've been trained to expect from a confrontation like this helps to establish a more powerful and mature psychological playing field.