There are two points we've reached a society where I've given up on meaningful gun reform.
1. Sandy Hook
2. Where we can't get everyone to agree that having more guns equals more gun deaths
The former showed we simply don't care (nor do we have the political will) as a society what costs guns impose because we have a percentage of the population that fancies themselves sheriffs from the wild west. The latter indicates why we can't have a meaningful conversation about guns. Beyond simply being common sense (of course if we vastly increase the prevalence of an item relative to other countries, the effects of that item are going to be increased in our country) we have statistics on the matter:
Firearm Death Rate Versus Firearm Ownership Rate by State, 2013
That one point on the bottom right proves you are wrong. The whole thing is flawed, no gun regulations are needed. Now, if you can show me a graph relating hammer ownership to blunt object deaths, that might actually be a useful analysis.