Good move with this GBU-43, IMHO.
No matter how many jihadists, mojahedeens and other rats were killed underground, it was a right demo showing that there was no shelter anymore there and that death is just a shot away. Demoralization of the enemy often matters more than "local arithmetics".
BTW, for those interested here is a comparison of this american "mom" with a russian "dad":
https://en.wikipedia.org/wiki/Father_of_All_Bombs