But surely it is about the fact that the victim thought she was having sex with a man and not a woman.
It can't just be about duplicity, can it?
When I was a student, one of my friends used to pretend she was an Irish air hostess she was neither . If she identified as that and then had sex with someone, would that be assault because she was duplicitous? I wouldn't have thought so, hence why I thought in the Gayle Newland case, the main issue was around consenting to have sex with a man not a woman.