Absolutely. I would say that one thing emerges. I've read a lot of reports by Gary Mauser—he quotes himself—and Gary Kleck, but he does not refer to other criminologists such as Philip Cook or people who work at Harvard, such as David Hemenway, Anthony Braga or David Kennedy, who was cited earlier. These are all major researchers who show that some firearms legislation and anti-firearms police programs are effective, but they aren't cited by Gary Mauser.
The same is true in self-defence cases involving firearms. He will cite the study that is the exception to the rule. However, all other researchers are unanimous: the biggest studies show that owning a firearm increases the risk of being killed, by suicide or by homicide. I would say this is a somewhat arbitrary selection from the scientific literature.