Here's an example. If you want to find out detailed info on a planet in the solar system, in Google you'll get the best results by entering one planet at a time: Earth, Saturn, Jupiter, and so on. In Wolfram Alpha, you can simply put all of them in one query and you'll get both the data for every individual planet and several comparisons between them. You can go crazy; add stars, moons, nebulae into the mix; as long as the data is comparable, Wolfram Alpha will be able to give you a nice head-to-head comparison of all the entities you've fed it.