User blog comment:IamJakuhoRaikoben/Chapter 371: Tartarus Arc: Part 2 - Song of the Heavenly Dragon, Review./@comment-4449950-20140216015651/@comment-7418318-20140218091046

But there are so many factors we don't know.

How much is 1 Jupiter? Is it the force that the Jupiter cannon dispersed with a complete firing cycle? Is it the force that the Jupiter's beam delivers in a single second? Is it the maximum damage output? Is it the minimum damage output that still allows a stable beam?

Could it be the amound of magic they poured into the Lacrima, rather than the explosive force?

We are comparing a bomb with a directed beam that fired continuously for several seconds here, with no idea about what forces are equated and how.

For all we know 1 Jupiter is the force that the very first prototype Jupiter cannon was able to put out decades or even centuries ago and the Phantom Lord cannon already shot out several or even hundreds of "Jupiters" of force.

But why do you say a bomb is different from a grenade? A grenade is just a very small bomb with added stuff to make it easier and saver to use by people without special training.