I am totally with you Dr.Ron.
The stats say: If you were to back every favourite on the tote, you would return 90% of your investment.
Betting on the tote which will pay out 85% means that in a 100% market, you would make money backing the favourite.
You should return $85, yet you return $90. If that is not the best free, and easiest ratings system, I don't know what is....