Siri Vs. Google Voice Actions

Greg Sterling comparing Siri to Google Voice Actions:

What Siri offers that is not equally true for Google Voice Actions ... is broad and deep integration into the phone and a more conversational style of interaction. This is subtle but meaningful in comparing the experiences of using Siri and Google Voice Actions. Siri has personality whereas Google Voice Actions does not. Siri is also generally more intuitive. In terms of most features, however, Google Voice Actions and Siri are fairly comparable — though Siri does more things.