Obviously there is a comparison between the three main female characters in the movie (Woolf, Laura, and Clarissa), but I also found a parallel between the two husbands in the movie: Leonard Woolf and Dan Brown.
Both husbands are good, solid men who genuinely care about their wives. Though the men certainly mean well, neither one really seems to comprehend what their wives are going through.
In Dan's case, he is completely oblivious to the fact that his wife is dangerously depressed and suicidal. He certainly shows his love for his wife. He comes home with flowers for his wife on his own birthday, and he makes a big deal abouth how much he enjoys his birthday cake that she made, even though it is clear that she's not a very good cook. Yet Laura never really opens up about how she's feeling with her husband, and he never probes her regarding her deeper feelings.
Compared to Dan, Leonard Woolf better understands what his wife is truly feeling. He's much more reserved and serious than Dan. Leonard clearly is trying to do what he and the doctors think is best for his mentally disturbed wife by moving out of London to the country. Yet, as the train station scene shows, he never really trusts what his wife says or wants. He's always worried that its the voices in her head that are truly controlling what she says/does.
Both men want the best for their wives. The two husbands are certainly not at fault for the illnesses of their wives. Yet neither man really seems to grasp what the women are experiencing, and as a result, they aren't able to save their wives in the end.