If you want to be taken seriously don't cite right wing organisations like Fox as sources of credible statistics regarding issues like gun control. That article is ridiculous. John Lott has been discredited for providing false statistics re. firearm ownership before congress in the US.
John Lott founded the CPRC.
Look at the crime rate of most countries with larger amounts of accessible firearms, the number of firearm related deaths and crimes where firearms are used. The USA is one large case study and evidence that guns do not reduce crime.
FYI I am a firearm owner.