Indeed, the odds are SOOOOO freaking remote that the people that worry about it probably don't understand them, even more so if you don't happen to live in a handful of specific square miles.
So pure coincidence that the chance is about 10-15 times higher in the US?
Of course the odds of being murdered with a gun are low for any individual person, but we're talking about thousands of human beings that are dying every year. You may not care about it, but it's obvious that the American gun problem is real.
I think the reason that gun violence is normally not a priority is that the victims are black. As long as guns don't threaten white people, the media can ignore the issue and people can be complacent about it.
Some of those other countries on the list (like Norway and Canada) have quite a few gun owners as well.
Both nations have more stringent gun control than we do in America.
Plus, not all guns are alike. I'm willing to bet most guns in Norway are owned by private citizens are rifles for hunting or target shooting. People hardly ever get murdered with rifles. The dangerous guns for gun violence are handguns.