You're correct that there are other causes of mortality that are worse than gun homicides. Things like heart disease and cancer have a much higher mortality rate. But another way to look at it is we have ~four 9/11's every year from gun homicides.
I thought we were going for real world statistics not made up numbers? estimate is another word for made up.
Here is the study abstract, and how the numbers were collected:
STUDY OBJECTIVE: I test the hypothesis that having a gun in the home is a risk factor for adults to be killed (homicide) or to commit suicide.
METHODS: Two case-control analyses were based on national samples of subjects 18 years of age or older. Homicide and suicide case subjects were drawn from the 1993 National Mortality Followback Survey. Living control subjects were drawn from the 1994 National Health Interview Survey. Ten control subjects matched by sex, race, and age group were sought for each case subject.
RESULTS: The homicide sample consisted of 1,720 case subjects and 8,084 control subjects. Compared with adults in homes with no guns, the adjusted odds ratio (OR) for homicide was 1.41 (95% confidence interval [CI] 1.20 to 1.65) for adults with a gun at home and was particularly high among women (adjusted OR 2.72; 95% CI 1.89 to 3.90) compared with men (adjusted OR 1.23; 95% CI 1.01 to 1.49) and among nonwhite subjects (adjusted OR 1.74; 95% CI 1.37 to 2.21) compared with white subjects (adjusted OR 1.27; 95% CI 1.03 to 1.56). Further analyses revealed that a gun in the home was a risk factor for homicide by firearm means (adjusted OR 1.72; 95% CI 1.40 to 2.12) but not by nonfirearm means (OR 0.83; 95% CI 0.62 to 1.11). The suicide sample consisted of 1,959 case subjects and 13,535 control subjects. The adjusted OR for suicide was 3.44 (95% CI 3.06 to 3.86) for persons with a gun at home. However, further analysis revealed that having a firearm in the home was a risk factor for suicide by firearm (adjusted OR 16.89; 95% CI 13.26 to 21.52) but was inversely associated with suicide by other means (adjusted OR 0.68; 95% CI 0.55 to 0.84).
CONCLUSION: Having a gun at home is a risk factor for adults to be shot fatally (gun homicide) or commit suicide with a firearm. Physicians should continue to discuss with patients the implications of keeping guns at home. Additional studies are warranted to address study limitations and to better understand the implications of firearm ownership.
That study was intentionally biased (even the author admits it) and excludes instances where criminals were not killed or injurred, ie if the criminal ran away after seeing the gun it's not counted in the study, thus skewing the numbers in favor of the point he wanted to make http://www.nraila.org/news-issues/fact-sheets/2001/22-times-less-safebranti-gun-lobby's-f.aspx
I'd finish out the rest of your list but I'm alas out of time. But the core point is guns just don't kill as many people are you'd like to claim and banning them won't do any better, the violent crime rate in the uk where guns are banned is 4x that of the us, worse yet gun crime has doubled since they banned guns.
Intentionally Biased Huh? Much like that website you linked to? I'll give you this: Certainly more study and better data is needed. Unfortunately federal funding for unbiased studies seems to have vanished.