Get-MailboxFolderStatistics vs Get-MailboxStatistics

Get-MailboxFolderStatistics vs Get-MailboxStatistics
http://technet.microsoft.com/en-us/library/aa996762.aspx
http://technet.microsoft.com/en-us/library/bb124612.aspx


The Get-MailboxFolderStatistics cmdlet shouldn't be confused with the Get-MailboxStatistics cmdlet. For more information

Use the Get-MailboxFolderStatistics cmdlet to retrieve information about the folders in a specified mailbox, including the number and size of items in the folder, the folder name and ID, and other information.
A mailbox can have hidden items that are never visible to the user and are only used by applications. The Get-MailboxFolderStatistics cmdlet can return hidden items for the following values: FolderSize, FolderAndSubfolderSize, ItemsInFolder, and ItemsInFolderAndSubfolders.    

Use the Get-MailboxStatistics cmdlet to obtain information about a mailbox, such as the size of the mailbox, the number of messages it contains, and the last time it was accessed. In addition, you can get the move history or a move report of a completed move request.