Edit: Also, the president of Crime Prevention Research Center is John Lott, who's a known gun rights advocate. Your source does not seem to be very impartial.
Edit: with regards to the US being the market leader, politifact rated a similar comment by Obama mostly false.
http://www.politifact.com/truth-o-meter/statements/2015/jun/...
And they went on to say that a lot of the other countries that ranked highly were small countries that had a single attack. Statistics don't work well in that regime.
And of course, here's what politifact themselves commented later:
"June 22, 2015: We heard from several of you regarding Obama's use of the word "frequency," and that frequency could refer to the incidents of mass shootings, not deaths as we examined. Looking at Obama's claim by incident, the United States has a higher rate of incidents than Finland, Norway and Switzerland. We agree that there is no preferred comparison and each is valid, and we've changed some language in this article to reflect that. ... "
Would it be more reasonable to compare individual US states to individual European countries? If so, are we going to throw out outliers like Berveik and the Sandy Hook shooting? Because with that philosophy pretty soon there aren't any mass shootings anywhere.
Fact is: the us has 10x the gun deaths and 4-6x the homicides compared to other modern industrialized democracies.
Regardless of your attempts at spin.
You may have some valid points regarding gun deaths and homicide rates, but that's not what this discussion was about.