Which demonstrates the growth in the league.Sure it's not huge but when you consider its ranking in terms of worldwide Soccer leagues its not that bad.
It still demonstrates that you can build new leagues with new entities in today's sporting market. Tradition isn't the defining factor. It's nice, it provides a history but for many its about the quality of sport played not how long the team/competition has existed.
As for the BBL, I think the growth of its crowds and viewership can be attributed largely to not necessarily the Ashes series but it's arrival on a platform where everyone can access it. The product in which it presents is strong and provides a high entertainment value. That would have more to do with drawing in fans then the Ashes. I know people who lament Test Cricket who happily watch the BBL.
The A-League is 10 years old now. People are talking about it as if it is a brand new competition still. It also emerged out of the National Soccer League which has been going for a very long time.
Their crowds have ebbed and flowed and are now in quite a good relative position thanks mostly to the culling of two absolute dud teams, Gold Coast and North Queensland and the introduction of West Sydney. This works two fold because WSW get a pretty good average home crowd and there is a blockbuster game at the Sydney Football Stadium twice a year which gets 40k+. This is the sole reason why Sydney FC's crowds have jumped by 6k per game following the introduction of West Sydney.
It would be crazy to think that a rugby union team in western Sydney to challenge the Waratahs would draw even a fraction of the interest that the West Sydney Wanderers draw.
The Big Bash League has a game every night in prime time during a time of year when there is no competition from other sport and as it is a traditional non-ratings period, doesn't go up against many blockbuster shows. It is not possible for rugby to hold a tournament that has any similarities to the BBL in terms of creating a similar product.
I think the biggest furphy out of the whole discussion is the premise that the A-League are getting a lot more for their TV rights. I think it is mostly a reflection that their deal is more recent and rugby will get a substantially bigger deal next time around, particularly if we can get one game a week on FTA.