For the median wealth somewhat house price driven although there’s also the reality that median and mean wealth in Australia is remarkably close together. You can’t have median wealth driven by home equity if no one has a house yet in australia the median and say top 25% have remarkably similar houses.

So yes they are high but it’s not like the disparity in the USA where the median is well below Australia (lot’s of people in the USA lost wealth in 2008 and never recovered) while the mean is well above (driven by the few that are extremely wealthy living a lifestyle unattainable to the commoners).