the author's assessment of whether or not the Main Character has resolved his personal problem
The notion that the good guys win and the bad guys lose is not always true. In stories, as in life, we often see very bad people doing very well for themselves (if not for others). And even more often we see very good people striking out. If we only judged things by success and failure, it wouldn't matter if the outcome was good or bad as long as it was accomplished. The choice of Good or Bad places the author's moralistic judgment on the value of the Main Character's success or failure in resolving his personal problems. It is an opportunity not only to address good guys that win and bad guys that fail, as well as good guys that fail and the bad guys that win, but to comment on the success or failure of their growth as human beings.