Microsoft has acknowledged this is in error...[1] (though the error seems to be that censorship meant to just apply to China is being applied everywhere)
[0] https://news.ycombinator.com/item?id=27395635
[1] https://www.vice.com/en/article/qj8v9m/bing-censors-tank-man
> DuckDuckGo distinguishes itself from other search engines by not profiling its users and by showing all users the same search results for a given search term.
Also note that DDG doesn’t just rely on Bing.
> DuckDuckGo's results are a compilation of "over 400" sources, including Yahoo! Search BOSS, Wolfram Alpha, Bing, Yandex, its own web crawler (the DuckDuckBot) and others.
I'm definitely not seeing the same search results from DDG on my PC as on my phone (using different networks). So they do show different results based on something.