To hazard a guess: because Google et al think you're the kind of person who clicks that kind of source.
When I search for list of superpowers, I get superheroes — obviously nobody on Marvel or DC is going to be listed as having "Russia" as their superpower, but this does illustrate what it is that search engines do these days, and it's not objective truth.
I could link to Wikipedia, which says of Russia "potential" superpower (along with the EU, China, and India), not currently an extant superpower. But that's not what I'd call "authoritative".
And this is the point where I got that link to the CIA's paranormal research. The CIA's World Factbook doesn't even describe the USA as a "superpower", at least not at the time of writing: https://www.cia.gov/the-world-factbook/countries/united-stat...
When I search for list of superpowers, I get superheroes — obviously nobody on Marvel or DC is going to be listed as having "Russia" as their superpower, but this does illustrate what it is that search engines do these days, and it's not objective truth.