They have amassed a global following of young male acolytes in thrall to their playboy lifestyles and unapologetic misogyny.

But the Tate brothers have quietly conceded in new court filings obtained by the Daily Mail that many of the braggadocious claims about their wealth, power and influence aren't real.

Lawyers for Andrew, 39, and Tristan, 38, say federal authorities have made the same mistake as millions of online followers – taking their deliberately 'outrageous' social media boasts literally.

For example, a $14 million fleet of swish Bugatti and Aston Martin cars that appeared in Tristan's videos were rented to create the impression he was 'uberwealthy.'

And the $50 million superyacht the government suggests the swaggering siblings could use to escape was someone else's boat they were paid to promote, their lawyers reveal in the filings.