1000^3 your an idiot!
Meb is decades older !
His metabolism shifts to efficiency because his system is familiar and capable of handling what he has done for years ! That is how the body works!
Jordan is breaking new ground pushing and developing her endurance systems in ways her body does not know how to handle efficiently ! She is in the high burn years of her life , it is totally reasonable that she burns that ,i am actually surprised it is only 500cal
I have a very high metabolism, in collage I did several dietary analyses . I burned over 7000cal on 3 of the 4 and 6000 on the other one , and I never ran more than 80mpw , and weigh 138lb , then and now!
Now i am much older and am probably in the 3000 range my metabolism is not nearly as high even though i still train and compete!
So why don't you think before you stick your foot in your mouth and bag on someone for something your too ignorant to understand!