Sport is sport and science is science. One speaks more to the body and the other more to the brain. Both are necessary in a sense for a person to be well balanced. It is sad that we pay sports figures so much more money than those who toil in our labs and in our universities because these people are certainly not better for society.
I do not believe sports and science are good topics to compare, however, if I must chose one, I would say science is better. Since sports are physical activities, they bear a healthy balance in anyones life, and most definitely should not be left out. However, science has provided the human race with answers to many thought provoking questions.