In New Zealand 5/7 would mean it started fifth favourite for the win and seventh favourite for the place in terms of its tab odds. I think they use this method because there are no on course bookies over there.

What Mr CosMos is suggesting is that in the normal scheme of things many horses would start at a similar odds ranking such as 1/1 or5/5, and that if there is a significant difference of say 2 or 3 rankings such as 2/5 or 4/2 it may suggest the horse has been more heavily favoured one way or another . I hope im on the right track CosMos if not could you please explain further.