True!

What I meant is that I think German police, for example, are probably less worried that a traffic stop is likely to get them killed or have them escalate a situation to the use of lethal force.

I think this might be different in the US because guns are just much more common there.

I think that's true but it's not guns alone it's broadly cultural in nature. Different places are different. Even in the US there are vast differences between regions.