Thinking in terms of winning and losing, there is none. I coached in several summer programs in which I had no chance of winning. Against many area all-star teams, I pitted our high school JV and varsity. We were trounced when mostly JV players showed up. However, we learned fundamentals despite the score.
Teaching allows coaches to work with all players regardless of ability.
An emphasis on winning requires coaches to recruit as many good players as possible and then merely manage them. Teach short players dribbling and tall players rebounding. Maybe we can skip dribbling all together if we have one good dribbler, because that's all a team needs to bring the ball up court. Teaching says that all 12 players on a team need to learn all skills and as a coach you are responsible for teaching them. Try to find a coach who disciplines a poor player who skips practice or doesn't try out for the team.