How is Mrs Dubose's illness paralleled with Atticus' defense of Tom Robinson?

they both know that they will not win, yet they try anyway

Conversely, however, they are opposite in the fact that Mrs Dubose wins by dying a woman free of her addiction to morphine, yet Atticus loses Tom's case.

"Real courage is when you know you're licked before you begin, but you begin anyway and see it through no matter what."Thus, they are both courageous in their separate goals