Relative?

There is a long list of correlations.

A lot of the “relative” is within the same country and just a given time frame so your interpretation is flawed.

You seem to need simplistic answers and the quote above pretty clearly points out recessions, gang activity (presumably related to drugs), inequality and governance as having some correlation so you could look up rates and compare if you wanted to have an idea of where some things might be different. That would be hugely speculative though

Violence is of course present but not at the same level as in South America.

Are you conflating violence (a broad term) with homicide?