I have a website that is no1 in Google in my niche word and has been for years - its an old html site and has an nicheword.com domain name
but your engine gives the first search result for "nicheword" - my Facebook and Flickr accounts, then other companies websites, instead of my actual website which is no1 on Google,
and my actual website is like in 10th place in your results which is pretty bad compared to Google,
looking at the DDG search results , it seems like:
1) you put more emphasis on social networds than Google ,
2) and you seem to put less emphasis on the domain address ( nicheword.com ) than Google does ,
I wonder is that logic reasonable - in terms of relevancy of the results,
3) you seem to like wordpress and other well known platforms and dislike good old .html websites ..