IIRC, they won by suggesting single-word search strings. For very easy searches, Bing slightly edges out Google, but no one cares, because both of them have the thing you're looking for on the first page. For those awful long-tail searches, Bing completely flames out, while Google often does a decent job. For a more interesting test, try describing things as if you know what you're looking for but can't remember the name (movies, products, etc.).