You are right, but at the start of the season we didn't really have enough managers, so at first we didn't have a ranking system to start with. Pironkov decided we should at least have some ranking system so he made champions race ranking table with all results counting. Only a couple of weeks ago has this been modified into a best-18 ranking, although still as a race cause I don't have the results from last year in the excel sheet.
For next year I'm planning to go all out and have both a Champions Race and an Entry Ranking, but for now this is all I can do.
Hope this helps