Okay, I will tell you guys a little bit more.
The crater suggest this is not just a Mk80 series, but a Kinetic energy penetrator or bunker buster in your speak. Hence the celebration. The development of KEPs (let alone an accurate REK) is a big feat for Pakistan. The shockwave gives it away that the bomb is penetrating before exploding, hence the blast magnification, and plume shape dividing to east and west.
If this has been achieved in the package of a Mk82, its a big feat, as it will ensure that large amount of weapons can be released to engage HVTs in hardened pens.