This is a lot of fun to play around with while drinking my morning coffee
Solid work Zerosky
The one issue I see is that for some reason it's under-stating the lowest / slowest figure horse. (ie. your spreadsheet has fotius at 15,444.90? (an easy fix is to make a reasonable plug to populate Si & Pi)
All the cells seem to be correct as I put in the prime power figures for this past Kentucky Derby. I took the liberty to exclude the Japanese horses as there's no Bris prime numbers to use. I just included rattle and roll and ethereal road in replacement. Then, to normalize the under-statement of the slowest horse.. I made rich strike the same power as Ethereal road and at best Rich Strike should have been $126.86 / 1 according to this chess elo spreadsheet.
I also plugged the numbers for the top 7 chess players... and apparently you would need over 6/1 on Fabiano Caruana to beat Magnus Carlsen if they played in a tournament. (Fabiano - put up a fantastic fight in the world championships - I would assume Caruana is underrated currently for elo purposes)