Last week Microsoft launched the new Why Microsoft website as part of The Future of Productivity website. On this website you can find useful information to compare Microsoft’s productivity platform against Google Apps, IBM, Cisco and OpenOffice.
On the Microsoft vs Google page, you will find a comparison between Microsoft and Google solution with a link to Resource Center where you can see why customers choose Microsoft over Google. Another resource is: White Paper: Counting the Hidden Costs of Google Apps. You can also Open it in Office Web Apps :-)
In the Word Web App vs. Google Documents demo you will see completely different results when the same document is viewed using Word Web App vs. Google Documents. Screenshot: