>>44201174"Out of his league" isn't necessarily pejorative, it just mean that he's a person who brings enough to the relationship to bridge the gap in their attractiveness by traditional physical standards. Even if Lusamine is a supermodel tier beautiful woman, she found that Mohn's wit and mind was beautiful enough to love him, and that's wholesome in its own way.
One might say that Lusamine is a more beautiful woman than Mohn normally would have ended up with, and Mohn is better husband than Lusamine deserved, so in a way they're both out of each other's league.