The 5.1 earthquake for this bomb would suggest a smaller explosion than the bombs at the tail end of WW2, however that depends on a lot of things. Looking at th

The 5.1 earthquake for this bomb would suggest a smaller explosion than the bombs at the tail end of WW2, however that depends on a lot of things. Looking at this list it would suggest about a ~600 ton explosion http://self.gutenberg.org/articles/richter_magnitude_scale http://self.gutenberg.org/articles/richter_magnitude_scale If I had to guess the seconds stage of their bomb significantly underperformed / didn't fire if it was a true h-bomb