how does this movie beat roman holiday in the ranking

Rating: 9/10 (1 March 2009)

though i admit Casablanca is really a good movie.but i doubt that in any aspect it has advantage over roman holiday. the fact is,now,that Casablanca is treated as the top20 movie of all time,while roman holiday is on the edge of the top250. why? both of the movies should be called love story.and they are both romantic. maybe the fact is that women,who are always ready to watch a love film,prefer Casablanca,while man,who are not so interesting in love film,prefer roman holiday.that is because Casablanca is a story about a woman and two men who are both heroes.and roman holiday is a story about a poor man and a beautiful princess.