Well, here are some facts:
The US has four times as many homicides as any other developed country.
The US has been ten and twenty times as many gun-related homicides as any other developed country.
Some 50,000 Americans were deliberately shot last year.
The UK now has its lowest homicide rate for 30 years. Australia's rate of suicide plumetted since instituting gun control.
In the US, 14,748 people were killed by guns last year. In France the number was 682. In Germany it was 690. In Spain it was 390.
Keep this in mind when Comparing the US to other countries.
You cannot compare the United States directly to any other country.
We have a reigning governmental structure known as FEDERALISM.
The laws and Constitution of each State is vastly DIFFERENT from the laws and Constitution of every other State.
Also, within each State, the laws of each city and town are moderately DIFFERENT from the laws of every other city and town.
Also, keep in mind, that many federal laws (that are govern the whole nation), are executed differently in different states, especially when significant devolution procedures have been written into that law.
Countries, like the UK, are UNITARY governments. The variance in local laws are microscopic in places like the UK. Moderate differences in law are only seen between rural and urban regions.
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This means, when you compare the laws of a UNITARY government, to the laws of the United States, are you no better off comparing Apples to a Smorgasbord.
In order to compare a UNITARY government to the United States, you should only consider Cities and towns that are governed by the same or very similar laws. Sometimes you MIGHT be able to compare them to an entire State, however, you can NEVER compare them to the entire Union.
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We also having a raging drug war (that should be legalized), remember that.
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Since the UK and Chicago have similar gun laws, we can safely compare them.