The Australian Prudential Regulatory Authority (APRA) surveys all MySuper funds each year for performance monitoring via mandatory statistical returns. This forms part of an annual superannuation performance test as detailed at https://www.apra.gov.au/2024-annual-superannuation-performance-test-mysuper-products.
Looking at the Fund Level data in the latest Annual Survey of MySuper funds - released in September 2024 - the average fund return was only 7.35% p.a. over the last 10 years (after fees) to 30 June 2024.
Full details of APRA's latest MySuper publication of Fund Level data and the list of surveyed Funds can be found at https://www.apra.gov.au/mysuper-product-performance