We have put together an EAS specific Log Parser COM object to help make building queries much easier.  You will find this Log Parser COM object very useful in further drilling into sync activity.

 

For information on how to use this download see: http://blogs.technet.com/b/exchange/archive/2006/03/03/more-on-exchange-activesync-reporting-with-log-parser-com-object-available.aspx