Just factually false. The reason you cant compare homicide rates to gun ratea across countries is due to confounding and isnt simply because some places are violent while others arent.
If you analyze the numbers according to proper scientific analysis where you loom at homicide rates before and after a change in gun laws kt cecomes very clear that banning guns in thr usa or anywhere else drastically increases violent crimes and homicide. I have posted thr stats on this countless times.