Australia’s #1 what, though? Australia’s #1 sport game show currently on the air? 
Speaking of which, they often have these creative ways of claiming #1. For example #1 new show or #1 drama or #1 comedy or even #1 show in America.
This week they were running a promo of The Good Doctor with the byline Australia’s #1 show. How can that be when MKR and MAFS have been rating higher this year? Seems like they are just making any claim they feel like these days.