The strike may have been able to achieve greater penetration depth with multiple sequential weapons impacting the same point (i.e. the three seen in satellite imagery).
https://www.twz.com/air/gbu-57-massive-ordnance-penetrator-s...
There appears to be an assumption that the main facility was exposed to blasts from the tunnels and since that appears to be an obvious weakness I'm wondering why the Iranians wouldn't have blast doors between the tunnels and the facility as a form or redundancy. I am still worried that this is part of an approach to slowly warm Americans up to another war, much easier to sell a limit strike as a success, then 3-6 months later when the Iranians have recovered it'll be even easier to sell another strike or a more involved engagement.
The administration forgot the political tenet that you lead the public into supporting military action before taking the action, not after.
But I guess that level of ignorance is what you get from B-tier politicians who would sign on to this admin.
It's about bomb quantity and sequential effects.