Youtube search results in Germany will differ from those in Sweden for one keyword in one language.
When I'm checking one of my keywords the keyword tool tells me that I'm first, but when I'm searching this keyword via YouTube from a specific country - I'm second (also I know that I'm not first due to lower CTR). So it means, that the keyword tool shows results for different country, which one?
I guess, that for Japanese or Korean there are no such problems, but for English, or German it's critical.
Hope you understand what I mean