Both have standards for each other. I can point you to multiple studies which show that men tend to be realistic about their own attractiveness and rate women on a 1-10 scale with a standard bell curve. Women however tend to considerable over rate their own attractiveness and view 80% of men as being “below average”.
https://medium.com/hello-love/women-say-80-of-men-are-below-average-bab0b8af2606
If either sex can fairly be accused of thinking they deserve a 10 even when they’re nowhere close themselves, its women.
Not based on my experience and the conversations and comments I’ve heard from men.