Edit: New accounts cannot reply so I rewrote my comment

I'm talking about equality in terms of attributes. The distribution of traits in males and the distribution of traits in females, are not equal. So I will not say males and females are equal. They do qualify as equivalent https://en.wikipedia.org/wiki/Equivalence_relation

I believe people should be treated as individuals, if you take two distinct persons A and B, I don't believe they are equal. The only person equal to person A is person A. On this vein, you can't say Group A is equal to Group B, unless Group A and B are the same group.

You can apply equivalence relations to groups, which is basically a lower threshold for equality.