The fact DDG can even get to the ballpark, let alone compete against an opponent whose budget is 3 orders of magnitude larger is astounding, and should be applauded.
I don't think a "wrapper" is the right term. They aggregate results from multiple sources including their index which is built by their own spider.
Also I don't see how that negates the fact that they are doing a fantastic job against a company that's is much bigger, more powerful, more experienced and with an incredibly larger budget.
