I saw Black Panther on it's opening Thursday night showing in IMAX. For the life of me, I can't figure out why its doing so well in the box office. Don't get me wrong, I liked it but there was nothing special about it either. It was a typical Marvel movie, but with basically the characters and setting from the Lion King.
For me, being a Marvel Comics geek, "typical Marvel movie" is a good thing, as I've found all the MCU movies entertaining and enjoyable, but I understand what you're saying—as I mentioned in an earlier comment, I like Black Panther, but I can't say that it's one of my favorites (at least, not after only one viewing of it).
I think its extreme box-office success is due as much to featuring a black superhero as it is to being well made—meaning, a lot of black people are feeling a connection with this character and his world, a lot more than is typical with a Marvel movie, and they're making that known with their dollars.