I think that it's far worse than google. Don't get me wrong, it's still my main search engine, but I find I have to revert to google to find what I want between 30% and 50% of the time.
Agree. I'm in the same position. I find it particularly poor and combining multiple search terms, where it seems to favour the most popular of the terms and ignore the important narrowing keywords important to the search.
Another agree. Also, it is way behind with localized searches.
I'm legitimately interested in what things you have been unable to find. Back when I was still working as an SE there were a few minor things that I'd have to revert back to Google for but for 95% of my "professional Googling" DDG worked for me.