Found this randomly... I'm not sure if anyone noticed or mentioned something along the same lines. My first thought was that even an athletic male (like a discus thrower for instance?) would be unlikely to run at that pace for very long. It's interesting in a way, but if the idea is to prove something, the whole idea is flawed.
As an example, I have a friend who's 5'10, 145 lbs. I'm 6', 195 lbs. In endurance running, I have absolutely no chance against him, I'm simply much too heavy. But that's irrelevant, we are both ATHLETIC, just in different ways. Sprinting, I can get very close and maybe surprisingly, I beat him in standing long jump.
If you practice long running, you're going to get good at that. If you don't, that doesn't automatically mean you're "fat", "out of shape" or whatever. A 7:30 mile is monstrous from an "average" persons viewpoint. I couldn't say how long I could keep that up, I've not even tried going that fast (for more than a minute). However, if you set the pace at 8:30 (which is still very much running, not jogging), I could keep going for at least 15 minutes. And I'm THIRTY-five, not 25...