They don't actually have the same story, one is about first love reuniting and the other is about a divorced couple reuniting. It's just about the vibe of the couples. FL has a hardworking personality, tough and good at fighting with others especially with their men, whereas ML has a calm personality, falls in love with their women first and is even considered inferior to their women's control. That's why in both dramas you can see how much influence their women's actions or words have in their lives even though they've been separated for years.