Further up on this thread someone wrote "If you ever thought the American justice system is bad...".
Someone else wrote wrote " Not trying to handwave away issues with the Japanese system, but scale seems relevant here. Japan: 40 incarcerated per 100k population [1] USA: 655 incarcerated per 100k population [2]"
So I read your post in that context. The conversation seemed to me to be about whether the American or Japanese justice system is "bad". Fairness would seem to be an aspect of "good" or "bad"... if you weren't trying to argue the American justice system was "good" I've lost the context of what you were trying to say.