You're right, that wasn't a very good example.
Still, I think that the gap in women's and men's world records will continue to close. The seconds and milliseconds between men's and women's swimming records will continue to close over the years. Ye Shiwen is young, and will continue to improve and get better. And there will soon be successors who best her.
I'm very confident in that, and looking forward to the achievements of Ye Shiwen, and anyone who might best her. The difference in the men's and women's records will someday become far less than 20 seconds. And some day, less than 10 seconds. And someday, less than 5 seconds. And some day, less than that.