Far more attractive women in track than swimming. By 1000 x.
Shifting issues, there are so many events in swimming and the US dominates so much that the best US swimmers are in the news every day for the first week. The best US track runners are usually in 1-2 events. When there have been athletes in 3-4 events (Carl Lewis, Marion Jones), those athletes have been bigger names.
To make a third unrelated point in the same post, why does no one suspect the US swimmers of doping. On this board, people always (reasonably) point out that if you beat dopers, you are suspect. Put differently, any dominate athlete in an endurance sport is suspect. So are the US swimmers dirty--after all, they usually beat the Russians.