Enjoyed reading the rankings but it's crazy that Molly Seidel doesn't make the world top 10. An Olympic bronze and 4th in New York gives Seidel a much better year than Bekere (3rd London, ranked 6th), Jelagat (1st in a weak Valencia field, ranked 8th), and Gebreslase (1st in a weak Berlin field, 9th on the list).
I think you definitely over-weighted times compared to results in the big events in the marathon list, e.g. Angela Tanui placing third for winning a bunch of B-grade races but Brigid Kosgei 4th after winning Olympic silver and taking 2nd in a loaded London.
LRC Note. We have taken this constructive criticism into review and decided to add Seidel in at #10. For a full explanation, see the second page for our post.