Let me start by pointing out that I haven't read the studies linked above. I'm afraid I don't have time today. With that said, you (generic, everybody kind of 'you,' not you specifically, @EgonSpengler ) have to pay close attention to the definitions sections of pretty much any study. I read a study a few years back on "child deaths" related to gun ownership. Some things weren't sounding quite right, so I looked into the definitions and realized that the authors counted anyone up to 23 years old as a 'child' for purposes of the study.... Hmmmmm..........There are those who would claim that an increase in homicide rates includes the ethical or 'proper' use of firearms to protect property or to defend against non-homicide crimes. That is, an attempted burglary that ends with the burglar shot to death, versus a successful burglary in which no one is killed, may be considered a positive outcome.....
Another study I read went into great detail about 'gun deaths,' but made no distinction between homicides and suicides, self defense shootings and felony murders. While it's helpful to know the total numbers, it's also very helpful to now how many of which kind of 'gun death' something falls into.