>>508952376
Well, NASAM should be ~20kg of explosive payload to a Geran's 90kg.
Now, there's a key concept of explosion scale, mainly the cube root scaling law.
The blast radius and crater size scale with the cube root of the explosive mass.
So it's basically (90/20)^1/3, which leads us to a scaling factor of 40^/1/3 = 1.65x larger and deeper, least on paper.