This isn’t really comparing apples with apples since laws differ massively across countries.

For example, Norway has a large amount of assets ($1.7T) in a particular fund because that single basket for contributions is mandated by government. Australia meanwhile has superannuation laws that require contributions be made to a myriad of different super funds that individuals choose — only the biggest few appear here (eg: Australian Super with $169B) but the total of all assets under administration in Australian super funds is actually $3.3T.

Then again, Australia has 5 times the population of Norway. Just saying it’s hard to make comparisons though…