you are higher than a kite if you think a9 is google. Yes, the results are "enhanced" by google, but this is a sight that is being designed and built by amazon, pure and simple, and amzn's ultimate goal is to compete with google. That is a fact.
hey know-nothing, my neigbor works at A9, which is a part of Amazon. They enhance google results with their "in the book" searches and other. But they do not have their own server farm with zillions of pages cached. If you think A9 is some kind of competitor for Google in the near term you are clueless.
Every month or so somebody brings up A9 here. A9 has no mission to overtake GOOG in paid search.