Lol, you are going by what the Cato institute it saying, and ultra-capitalist think tank? Those graphs aren't even showing the same thing, so you can't compare. It also shows a complete lack of understanding of the system.
There are 2 retirement systems that operate together:
Superannuation - compulsory % income contributions by employees AND employers.
Age Pension - paid universally out of taxes, but is income tested. This is basically like social security.
If your superannuation exceeds a certain threshold then your age pension goes down by a %, but not 1:1.
If you actually want to educate yourself about what the scheme is instead of looking at meaningless graphs by right-wing think tanks with an agenda and an axe to grind you might start here.
https://en.wikipedia.org/wiki/Superannuation_in_Australia
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