The chart is skewed. What is the sample size? Where is the data? Is it UFC specific?
First of all, there's by far more Americans and Brazilians in the UFC than Russians. Fair data would show something like pr. "capita" or a percentage based on a total of said countrymen in the organisation.
Secondly, Divions champ? National champ? What does that even mean?
Thirdly, as stated before, TUF contestants have almost exclusively been from the US. Canada, Brazil and the UK has had a few seasons, but that is about it.
The chart doesn't make any sense.
And I'm not saying that the "Russians" or whatever will take over. I find the sentiment annoying. But these "statistics" are bullshit.