DuckDuckGo isn't yet on par with Google and will never be (hopefully) because that would mean they keep track of users searches and other data, which is the reason most of us don't use Google for. Privacy is not free, and a bit less accuracy when searching online is a small price to pay.

However although DDG is not going to surpass Google in that field, it is indeed getting better and better every year, and there's one thing it could seriously spank Google's ass: implementing a working discussion filter. The discussion filter was one of the most useful filters Google once had: using it in a search meant one would get only results from blogs, forums, Usenet etc, that is, comments from users of X rather than sellers or advertisers promoting that X. It wasn't perfect but helped a lot to filter out shills, astroturfers, fake forums and similar trash, therefore it didn't suprise me much when they removed it probably because their sponsors didn't like that function. So why not implementing it back at DuckDuckGo?