The gap has been favouring bing (DuckDuckGo) for a while now in my experience. Every time I use Google or just doesn’t find what I’m looking for. Just a few days ago, when Bing was down and I had to use Google, I tried searching for the new beta nvidia Linux drivers. Google didn’t even include the official nvidia site in the first page of results. When I later searched for the same thing again, using DuckDuckGo, it was the first result… and stuff like that happens every time I need to use Google. The only category Google still seems to have a slight edge in is current (as in happening right now) events.