https://www.nationmaster.com/country-info/compare/Belgium/Un...
Here you can see we have more crime per 1000 then America. But we have significant less gun crimes and/or violent crimes then US. Also violent crime with murder and murder crime. 1 more trivia item is that we actually have more police officers per capita then America.
Not sure what to conclude. Gun restrictions seem not to curb crime but seems to curb violent crimes and murders. Or maybe we are just less violent :) I'm not sure.
But what I can conclude is that our Police doesn't have to go many times to violent crime scenes and when they go the chance someone is armed with a gun even less likely....