If crap analogies for the dullest debate on Earth are the order of the day then I’m going with a semi topical theme…
I think it should be compared to various forms of mass murder:
26″ – Good old reliable mass shootings; line ’em up, gun ’em down, buried in a shallow pit and hope the war crimes tribuneral never find out… perhaps doesn’t achieve the same volumes but definitely a more “Direct” method.
29″ – Conventional Bombing of civilian populations, pretty indiscriminate, intended to erode moral as much as disrupt extant infrastructure (trail erosion), people can get all misty eyed and patriotic over the equipment used in years to come, and push the horrors they brought to the back of their minds… Pretty brutal but very effective given the technological limitations of the time.
650b – Chemical tipped missiles, Expensive, excessively cruel, again Indiscriminate, as much a demonstration of will as a means to kill. Basically that one step too far for most rational people. Seemed like a “good idea at the time” but will galvanize peoples hatred for you, in the long term liable to become your undoing…