According to those statistics, Japan has a higher gun crime rate than the USA, looking at "Firearm-related deaths per gun per year".
My opinion is that those statistics are not very useful.
My opinion is that those statistics are not very useful.
For Japan in 2014, 6 deaths in 2014 with 710K guns for a ratio of 0.0000085 deaths per gun.
Double-checking, the US has 5600 x more deaths with 380-435 x more guns for a ratio of 12-14 more deaths per gun.