Well there has been no major gun control in Switzerland because it's been shot down (no pun intended) so severely there are barely any gun control proponents there remaining, so I guess you're right, you cannot gauge the effectiveness of gun control by looking at that nation. Nowhere do I make a direct compairson between the US and Switzerland. I might've just posted this but here you go again:
It's not useful to compare per capita rates in general between different countries because countless social factors are not made transparent, i.e., you are implicitly making the assumption that society in the US and UK are nearly identical, which is far from the truth. For instance, if we compared per capita gun violence in China versus the US, it is probably far lower in China. Does that mean we should aim to replicate Chinese policy on guns and violence? Moreover, gun violence rates are lower in Switzerland, does this mean we should strive to have policies similar to that in Switzerland (these two nations have vastly different policies, with the Swiss policy far closer to the current US policy in most gun-friendly states).
What is more significant to consider is the change in time of gun crime rates after institution of a law in a given nation, which could be used to gauge the effectiveness of said law. Since the late 90s UK firearm ban, gun violence in that nation has increased. In other words, the firearm ban did not achieve its intended effect.
Same data, different conclusion.
If we instead look at the time history of gun crime rates in the US, we will see that it has been steadily declining for the past 1.5 decades. Despite the sunset of the "assault weapon" ban and massive increase in legal gun sales, this decline has persisted to today.
How did you conclude that about the Swiss? I know nothing about Swiss history so I can't comment.