No, I don't think they would to be honest
The Wallabies problem is not talent, it's a lack of game awareness and tactical understanding
Obviously, we can improve with what we have but at the end of the day, if you give the USA the best coach in the world and their players perform to their best ability every match - they're not going to win the RWC are they?
They don't have the talent
in rugby.
Now, if the NFL didn't exist, they'd probably beat everyone by 100. Their "registered rugby players" probably are more than a lot of top 10 rugby nations.
This argument isn't so much about making excuses, it's more so that expectations need to be adjusted. The Wallabies should be ranked 7th-8th in the world with the status of rugby here. If anything, we overachieve. No one expects the Socceroos to be top 10 or even top 20 in the world. Given how popular basketball has become here and the talent we have in the NBA, there were expectations on us to get a medal at the last Olympics. Expectations should be realistic based on the game's popularity.