Fatherson, I think, I didn't just bark back. I wrote that gun availability is not the only factor that contributes to murder rates. The difference between your chart and SB's chart is that his only includes gun related deaths, not murder with poison, dogs, or spoons.
My reference to Youtube was not meant as an argument but as a question to refer to some more reliable source in general, which doesn't say anything about the specific source you referred to).