Yes, which is why you need to clean up datasets until you have two comparable ones, if you want to compare countries.

One example often posted is "OMG the UK has so much knife crime! It's more dangerous than the US!" Because UK knife crime is mostly the crime of having a knife in a public place (in your pocket or in your car) without good reason.

If you count only knife injuries and murders, then the countries are pretty similar - only the US has gun injuries and deaths too.