This is a screenshot taken from the InfoWorld website about the limited features found in Google App should makes enterprise architect think twice before dumping MS Office. The reports even says Google still using MS Office for most of the productivity works.
As for the ad (in this case its Double Click), word to word matching might not be a good strategy.
http://www.infoworld.com/article/07/08/23/Google-Apps-no-replacement-for-MS-Office_1.html