I just read the above article in the Sydney Morning Herald. It is an edited version of an article first published in The New York Magazine.
So I am asking myself now can married couples be equals? The answer is of course, sure, they can be equals. However in a sexual way they definitely cannot be equals unless they are happy to live more or less in a kind of sibling relationship.
I think the French did get it right a long time ago: Viva la difference!