I think the number of people killed in the world each year by personally owned novelty military vehicles is approximately zero. Hundreds of people are killed in the United States every year by unarmed assailants. When will we wake up and pass common-sense karate-chop control?!
How many people would die from personally owned military vehicles if they were not illegal and how many people would die from karate chops if there were (magically enforced) laws banning them?
Please also compare the relative numbers of people with rearmed military vehicles and people with karate-chop capable arms. The important comparison is the conditional probability, not the total numbers.
0 divided by a small number is going to be smaller than a small but nonzero number divided by about seven billion.
If you want to be obtuse you should argue the "tanks in the service of foreign warlords seeking to overthrow their local governments are privately owned" angle.
