In general, Bing returns disinformation and misinformation at a significantly higher rate than Google does
This is the problem with leaving Google. I have been trying a few other search engines. For the most common topics, the results are similar, but when I get slightly off the mainstream (esp to non-English topics), the results quality starts to go south. Some is just poor relevancy, but there's also a lot more spammy results.
I feel like Google was in a vulnerable position and could have been knocked off... then suddenly they launched Panda, Penguin, Caffeine and Hummingbird and they just seem untouchable in terms of results quality. I know about all the other issues, but since 2013, Google has mostly returned better results than the others IMO