The joke is how weak the event is.
Comparing the world leading times from men to women from last year:
100m: 10.74 - 9.74 = 10.3%
200m: 21.63 - 19.55 = 10.6%
400m: 49.26 - 43.48 = 13.3% *
800m: 1:56.99 - 1:42.50 = 14.1%
1500m: 3:50.07 - 3:26.69 = 11.3%
3000m: 8:22.22 - 7:34.66 = 10.5%
5000m: 14:14 - 12:53.98 = 10.5%
*Consider that Allyson Felix actually ran a confirmed 47.72 400m relay leg so could likely run ~48.5 in the open 400m, bringing the difference down to 11.5%.
Hopefully you can all see the problem with the women's 800m. Semenya still has an advantage, but the current 800m 'elites' on the women's side are extremely weak. This year it seems the women's 800m is even worse as Eunice Sum is in bad shape and the next fastest female last year was Melissa Bishop in 1:57.52.
I haven't seen any other girls this year that look like they could break 1:57.
Read more:
http://www.letsrun.com/forum/flat_read.php?thread=7349111&page=1#ixzz4Ao7JLKvK