True. I suspect there are a bunch of effects that come into play because the question is basically, "What would go do if you could vote for another country?"
E.g., I am not sure whether respondents voted for the candidate they would want to live under (which I think would be the more straightforward option) vs. which candidate they would want to see in another country (for the benefit of their home country).
There's also a strong element of how deep people are in the national/US propaganda cycle vs. hearing a few news items from a distance.
Also ... The image above is of course presupposing a per-country first-past-the-post voting system. Denmark only has 4% Trump voters (which I don't think matches with their national voting behavior). However, e.g. Germany polled at 21% Trump voters which happens to line up almost perfectly with the percentage of far-right Afd voters.