The first named horse is top rated, the second is second rated.
The rankings give you a direct entry into a race by pinpointing the right type of horse to back. They should marry well with the Geegeez racecards and form filters as a consequence and this is the approach I would recommend to the more serious minded punter. Use them as a starting point. They highlight the best horse/well handicapped horse that is likely to run to it’s rating in that race, with ‘likely’ being the operative word.
But they’re also ideal for fun punters as they highlight horses at all prices, so therefore cater for all punting tastes. Use them as you wish. Ether way they will provide you with an edge simply because they indicate the right type of animal to back. But I cannot recommend backing them blindly. A degree of selectivity is needed, whether from a form or value perspective, or both.