I defy you!
This is a great song. It is a poignant song, deep and personal. Listen to the words, place yourself in the shoes of the man who wrote it, feel the regret, feel the pain. Now, feel the catharsis which comes from writing a song to him, which he of course will never hear (or maybe he will), expressing all the regret and pain.
It did the best of all their songs because it is the best.