Hardly.
If either "side" of the debate were honest, and has truly hashed it out with some real intent to find out the truth, they would say that it is not clear whether guns make Americans safer or create more danger.
Hard to get someone to admit to that, but I have debated the topic enough times to see that both sides can produce statistics that support their side and both sides can take issue with the other's use of those stats and why they don't apply.
I could easily do the same thing with your link. Tons of holes in her argument and data. Plenty of data can be used to combat hers. It's pretty clearly a biased article.
That said, I think fbguru's poll was pretty conclusive. More guns for everyone!