You make a good argument, however limited it may be. There are large cities other than New York, Chicago, Las Angeles, etc. Just underrepresented in politics. Hell, there are people in Boston who still think we ride horses to work in Texas. If you want to strike at the heart of gun control, go along the east and west coast of the U.S. Not necessarily just the urban areas either. You will find the strongest support for gun control there. Texas is an exception and the exception does not make the rule, however it does invalidate a lot of the prior argument.
I believe that most Americans are not so dumb as to swallow what they are told, as per the last election results where the media was in obvious favor of Kerry. Additionally I don’t put a crap load of faith in statistics, even when qualified through a statement of research (though the latter does make it easier) as statistics get abused time and time again in both quantitative and qualitative ways when agendas are set forth, I’ve seen it first hand. You can only cram so much B.S. down someone’s throat before they throw up.
I think in urban areas the reasons for owning a gun take on a much more sinister shadow than it does in the country. Mr. Big Country buys “hisself” a 12 gauge to go hunting with, but may also use it in self defense. Mr. Urban Nonuts will buy a 12 gauge to shoot a human being with; some people just cannot come to terms with that before hand, thus a large part of gun control. In the country Mr. Country gets to decide in the heat of the moment (situational ethics), in the big city Mr. Nonuts has to decide long before an attack that he can and will shoot another human being. There is a solid difference in how guns are perceived by both. This is what I mean by guns in the country are viewed as tools and don’t necessarily take on a sinister light. For example, as I type this I have a snub .357 magnum sitting next to me, this weapon is designed for one thing and one thing only, shooting people. I had to make that choice when I bought it and I didn’t make it lightly.
Thus I assert that you will have a proportionately higher average of people in the city who own guns for defensive purposes than in the country.