The Win % is the Raw % of LS Winners at their next start without taking into account any other factor.

The Winning % of favs who won their LS is 30.8 % therefore a 70 % chance of losing and usually at a poor price.

If you bet those favs in the 55.0 - 57.5 Kg range then the strike rate is considerably higher.

Without any Form study I,d be inclined to look for Favs in the last 4 races with weight 55.0 - 57.5 KG that are at $4 or better with a senior jockey to 1.5 apptc riding it
I dont have any backup for this though.

The big thing though is to get a better price than the average.

Its almost impossible to win betting 1 horse a race no matter what the BSA tell one.