They’re not just disagreeing. They’re asserting that you shouldn’t analyze the issue statistically (I.e. they reject the notion of putting it into context) but defending the non-zero rate of gun deaths in other countries with statistics.
> But they've done so very poorly, as I'm sure you can see.
This reads as appalling smug. Whether spaceman_2020 made a good argument or not, you are quibbling over ultimately unimportant figures when the situation remains that mass shootings of children in their schools are orders of magnitude more common in the US than other developed countries.
You should also be appalled by the adolescent suicide rate involving firearms - that's also not normal.
I just think that, given the status quo, the best approach to reducing all forms of gun violence is to just generally make life better for everyone, and that the resources spent on trying to wrench guns from the hands of the citizenry are much better spent on just about anything else.