For accuracy duckduckgo is leaps and bounds better than google search. But I think what most of the users want from a generic search engine is not accuracy but fuzziness, context and news awaresness.
For instance if I search ping pong in google right now, my first result is a currently airing japanese tv series about ping pong (and the show name is not even in the same alphabet I used to search). Duckduckgo returns the english wikipedia article.
Also, the title of this article is so messed up...