Chrome, I'd like to know what you mean by 'accurate ratings' ?

As you know there is a large swag of unknown facts in horse racing that can't be measured before a race. Only if all facts are known can 'accurate' ratings and therefore accurate PP [or SP for that matter] prices, be produced.
If they could be produced, that would mean you would know the winner of almost every race [have to allow for the odd horse falling over etc.].
30% accurate [SP fav. SR] is as accurate as ANY ratings [or PP prices] get, surely?

If not, I'd love to see a demonstration [not after the race examples] of 'accurate rating' doing their stuff any better and 'accurate' implies a heck of a lot better than the current SP fav. SR.