Dont really know and its something I,d like to know as In I bet the Fav in the first 4 races of the day @ a certain Price.
On the 2 Dead tracks Mildura and Nowra today 50 %.
Thats why your idea interests me so much (detecting false Favs.)
i.e if say their rated $7 in NZ and here $3.25 one would have to query it.

Cheers.