> In day to day life there are 0.21 homicides by gunfire for 100k inhabitants per year in France and 3.6 in the US (source: wikipedia).
This is missing the point of the comment you're replying to. You're comparing homicide by gunfire, not homicide.
It is true that Europe has a lower homicide rate in general, but there are exceptions. Lithuania is a European country with restrictive gun laws and a substantially higher rate of intentional homicide than the U.S. (https://en.wikipedia.org/wiki/List_of_countries_by_intention...)