There's something lacking in the analysis here. Someone did run 14:11, but it was not Ayana. It was Tirunesh Dibaba in 2008, the same year she ran 29:54 winning the gold in Beijing, age 23. Somehow though, Ayana, with a similar PR, ran 37 seconds faster for the longer distance than Dibaba was able to! Apparently though, Dibaba was dogging it back in 2008 as at age 31 she just broke her PR by 12 seconds.
Just looking at the numbers, it would seem these performances were super-enabled. It might be the track, it might be doping, but the numbers invite scrutiny.
Do you feel the same way about Huddle?? She broke her p.r. by OVER 30 seconds after running the event for 10 years, and after going out too fast, then having to run by herself and run in lane 2 half the race passing lapped runners, i.e. NOT ideal. Why is THAT believable? If she never lost contact, and never had run in lane 2 she might have run right about 30:00, breaking her P.R. by close to 45 seconds. Believable??
Do you think the swimmer Ledecky is on drugs, crushing everyone and swimming not much slower than the men?