You are right, I was dashing off a post and I should have been more clear that I was rating Daredevil only by my own lights. As I have had reason to discover, all of the Marvel Netflix shows are and will be rated TV-MA, but they have very different qualities, and because the Marvel name and cast of characters (and home-based accessibility through Netflix) are so attractive to the middle-school set, we parents of those middle-schoolers are trying to sift through the shows and decide one by one what we will let them watch. Just look at the reviews and recommendations on Common Sense Media (a site/app devoted to helping determine what media content is appropriate for what ages) for these shows and you'll see they range from ~11-18.
I totally get why Marvel wants to keep its blockbuster movie properties mostly PG-13 (saying no to Deadpool was also an unpopular decision in our house) and then create a space for consistently adult content in streaming, but it is a pain in the ass if you have a kid who's not a little kid but not an mature older teen, either.
So — Daredevil was a no for my son at first, just to be on the safe side, but then it became clear that most of his friends were watching it, not to mention a family friend was deeply involved in its production and to my Asperger's-type son it felt disloyal and hypocritical to avoid it (especially when said family friend has a son his age who had of course seen it all), so I finally caved and in the end decided that while violent, Daredevil is literally comic book violent, and the characters are drawn in pretty broad strokes, and there's no complicated sexual stuff, so, you know, whatever. [Yeah, yeah, awesome parenting, but I'm hoping that some of you either remember being 13 or have some experience parenting a 13-year-old and know that you pick your battles.]
Jessica Jones was and is a hard no because of the intense psychosexual violence, as well as the sudden and arbitrary acts of extreme personal cruelty, depicted and implied.
Luke Cage is a weird one. Like I said, I think the racial and social content is more problematic for a younger audience than the sex and violence. I have been having some interesting conversations about the show with my son and his friends who are watching it.