Google Squared - Bing - Wolfram Alpha

It seems that this week is the week of new search (decision/computational knowledge) engines. After launching Bing and Wolfram Alpha just a few days ago, Google just released Google Squared as "an experimental search tool that collects facts from the web and presents them in an organized collection, similar to a spreadsheet". Google Squared and Wolfram Alpha are quite similar, as both try to "compute" answers in response to a user query. However, unlike Wolfram Alpha which uses an internal database, Google's database is the whole web. Will Google Squared be the Wolfram Alpha (and maybe also Bing) killer...