Emails provide evidence that the administration attempted hide True Nature of attack and falsley blame internet video
Also keep in mind that Ben Rhodes is a communications director with the white house. He is not a policy analyst or maker. When you read the email he is clearly concerned about appearances and is trying to shape opinion - not provide information.
Lets also remember how much information the administration had from the CIA on the ground in Benghazi, and Libyan officials stating from the get go that there were no protests and this was a terrorist attack and that in spite of this President Obama blamed the attacks on the video for nearly two weeks after the attacks and deny it was a terrorist attack.
All this can only lead any reasonable person to believe that this email is part of an orchestrated attempt to mislead the american people into believing the attacks on the Benghazi compound were initiated as a spontaneous reaction to an internet video protest as apposed to a pre-planned organized terrorist attack.