I would not compare the modern times ( wwii is considered modern as opposed to now, which is "information age" ) to freelancer times, although the formulas and calculations are the same, the figures are different. In this instance, a bomber could fire a snac every 10-12 seconds, a weapon that can deliever a punch on anything is infact NOT RATIONAL. Novas ARE rational because theres no limit of how much enenrgy input a missile can deliever, considering its structure ( chemical missiles do less damage than Direct-attack missiles - but has a wider "damage effect" is just one example, nuclear missile is another example, yet for some reason - you have a gun that can deliever almost the same punch every 10 seconds without losing its powercore.