Interesting for comparison sake
Below are the personal best marks for both as copied and pasted from the IAAF website
Shannon Rowbury
800 Metres 2:00.47 (2010)
1500 Metres 3:56.29 (2015)
3000 Metres 8:29.93 (2014)
5000 Metres 14:48.68 (2014)
Jenny Simpson
800 Metres 2:00.45 (2013)
1500 Metres 3:57.22 (2014)
3000 Metres 8:29.58 (2014)
5000 Metres 14:56.26 (2013)
800 meters = .02 seconds separates the two
1500 meters = .93 seconds separates the two
3000 meters = .35 seconds separates the two
5000 meters = 7.5 (approx) seconds separates the two
Aside from the 5000 meter outlier, they have very similar personal best marks.