Ok here's the issue; according to the wiki you have a missle that can carried and fired by infantry. That's not the problem, the problem is that you have, in you own words, essentially a nuclear missile that can be fired by infantry as well.
This allows a single infantrymen to take out large groups of enemy assets, tanks, infantrymen and if that infantryman has several of these Nuke's at their disposal... I'm sure you get what I mean.
Unless I am looking at this the wrong way, regardless, that is my concern.