[Symmetry]

That's not really the intent. Mostly the idea was that the armor on a tank will do a good job protecting from the blast and heat but a poor job protecting against neutrons. So if you want a weapon to attack an column of armor you're better off having your warhead put as much of its energy into neutrons as possible.

Really, bombarding things with neutrons is not what you want to do if you want to re-use something. Some elements become radioactive when they absorb a neutron and if if you want to re-use that infrastructure you'd probably be better off letting it take some blast and then repairing it.