Miss World favors well rounded personalities. They have scores for physical fitness, talent, contestants with education have an edge over others. Their semifinal comprises of pretty faces and smart, independent, pleasing personalities. What happens after semi final is a big mystery though. No one can be sure on what criteria are girls being voted into top 5 or top 7.
Miss Universe on the other hand is a cut throat glamour contest, where top 15 can be predicted with a lot of ease. Sexiest girls and big sachets ( Venezuela, India etc ) almost always make the cut. Of late Trump himself picks 6 semi finalists ( which throw some serious surprises at the pageant followers ). Scores are televised, criteria of selection is absolutely clear: swimsuit, then evening gown and then a customary answer.