Studies prove, in places where the ownership of guns are highest, crimes are lowest.
I don't think that I could agree with that post. Normally, gun ownership is higher where the crime rates are also high. If the crime rates are low, then there is no need to purchase firearms (that said, in some of the US states such as Vermont, Maine and New Hampshire, the gun ownership is extremely high despite the very low crime rates).
That is quite a speculation on your part, Sithara.
It might be, that prevention (or gun carry in this case) is cultural
in Germany you will get fined for carrying pepper spray, despite ever increasing crime rates, the laws dealing with personal defense did not change at all.