I got the impression that they expressed aspects of Tolstoy's character and ides. Rostov i similar to the soldier Tolstoy. He retires from the army and throws himself into the estate and farming, He displays a respect for peasants and working the land. He also incurred gambling debts as Tolstoy did.
Pierre is a man who has come through fire. I thought that he represented the social aspect of Tolstoy - awkward in society, but sincere in his ideas and motivations.
I also felt that the female characters were vehicles Tolstoy's ideas. I did think the characterisation was good.

