Here's an Israeli reaction:
"Not every explosion over there should be tied to reconnaissance and stories from the movies," Dan Meridor, Israel's minister for intelligence and atomic matters, told Army Radio. Saying, "it isn't right to expand on this topic," Meridor nonetheless went on to acknowledge that espionage has set back Iran's nuclear program. "There are countries who impose economic sanctions and there are countries who act in other ways," Meridor said.
The lack of craters is very curious to me. The "after" picture was apparantly taken ten days after the -- ahh -- "event." The Iranians might have filled in any craters during that time, as a face-saving gesture.
But other, more interesting explanations come to mind as well.
haaahaaaahaahaahaaahaa. Danny boy, you are da man!
Yup, it blowed up real good!