Multiples of a very low number is still a pretty low number. That said, having returned fairly recently from an event in an unfamiliar US city with a reputation for being relatively dangerous (Detroit), I'll say that I didn't feel very comfortable in spite of it probably being mostly safe enough objectively. So it's understandable that an obvious tourist who doesn't speak the language at all in a US or European city might feel at risk.

With America, it entirely depends on where you go. Some parts of a single city might be dangerous, and other parts nearby much less so. Detroit has a bad reputation, but isn't unsafe everyhwere.

That said, every place in the US is generally less safe than many other countries just because of the usage of cars, and their typical high speeds compared to other places. Over 30k people die in the US every year in car crashes. Usually, people think of crime when the word "unsafe" is used, but they forget all the danger with cars.

Switzerland and Denmark are not micronations but are comparatively safe or safer.

They're not micronations but they're tiny compared to Japan. The two of them combined have less than half the population of Tokyo.