Because Dibaba solo'd in chicago!
please stop with the excuses.
Dibaba ran great, and she had company for > 30k which is how far pace makers typically go. I bet she would have run 2:17s if she ran a more measured race.
No excuses were made for Rupp, just stating the facts.
btw - have you ever actually run a marathon? Do you know how good it feels to neg split, PB, hammer the competition and win a race? Acknowledge that, or you're just yet another boring Rupp hater who refutes facts as fake news.