The saying.. "All men are the same "or "All women are the same" how accurate is it?

My brother and I are on a different path and there are a lot of things we don't agree on.
Some days ago we were discussing the same matter and he was insisting or rather he was saying that he can't even trust women because of the above statement but of course that can't be true. I believe the above statement is applied base on the individuals. Which is not everyone is mad.

What's your thoughts?

NB. Just state what you believe is true.
The saying.. "All men are the same "or "All women are the same" how accurate is it?
Post Opinion