It certainly isn't the guns...
As I stated in the other thread, you have to look at gun crime and accidents in context of whether the crime was committed by someone who was legally able to own a firearm. Responsible gunowners when they kill in self defense are RARELY charged with a crime. So look at WHO is perpetrating crime not what tool they choose.
If the US has a problem, it isn't with guns... It is with criminals...
If you are serious about this I suggest you read John Lott's "More guns, Less Crime"
http://www.johnrlott.com/