I wonder about this... the presentation, the comparisons, the competition. At least that's what it appears to be to me. I've seen it in three generations of women. My mom and my aunts. The sisters-in-laws that married into the family. And even watching my daughter, and the younger generation I've worked with who post every picture-perfect moment on Facebook.
I've never understood it, and each generation has different traits or drivers. But I've not seen anything close among the men in my life, and especially not my friends.