I find myself embarrassed for the sexism expressed in each of those situations -- for the stereotypes the men endorse when no women are around, and vice versa.
I'm also single and depressed so take with grain of salt eh.
No, you're right. There's a difference between making a joke about the similarities between your wife and your friend's wife versus making sexist remarks that some groups of men tend to do. And some women do too, to be fair. Humans all have flaws, and some of us try to put those flaws aside. Others like to put their flaws on display like they are proud of them. There's no excuse for it.