No man, just no...
Homicides alone, about 3,500 people were killed just this year here in Rio while in Compton... at least 30
Not to mention that many of the murders here aren't even recorded by local police, or are mistakenly reported as "missing" cases due to lack of investigation.
Statistics? Sources? Even if a large amount of the homicides were not being reported that would be a huge ass gap and is not touching American cities like St Louis or Detroit which have made the top 50 most homicidal cities where as Rio has NOT.
The Most Dangerous Cities in the World
Even Brasil's own homicide stastistics shows Rio is relatively low compared to other regions.
Rio could've gotten much worse since that article was posted(2016) but its still not beating out much dangerous American cities.