I'll take your question in the proper context.
First, as I have stated a couple of times, I am an engineer by training. I have a pretty good foundation (no pun intended) in geotechnical engineering. One of the members here had mentioned a number of pages back that the Fordow complex is at a depth ranging from 80M-100M with the concrete thickness of the structures being 10M.
Let's assume that is accurate. It may not be. Actual depths likely classified. Anyways, solid granite. And an untested weapon, at least to the best of my knowledge, to be applied against a target site with those parameters? Even with the best of computer simulations, this will be a tough nut to crack. This won't be like TG2 and dropping a bomb down an air shaft. Even multiple impacts may not be enough.