That's not the story I remember. My understanding is he took papers that had notes on them to destroy. In other words, the papers were the same but the ones with notes he destroyed. And, these were the same papers that would have the information on these specific events.
Maybe I'm wrong, and if I am I'm sure a Freeper will correct me, but that's the story I remember.
You are probably right
You are correct. Sandy took "copies" of a memo or an agenda that had comments written on them. DBM/DNC immediately tried to convince us that "all" he had taken was [photo]copies, so where's the beef! What's the big deal! They're just Copies, no harm, no foul.
What was annotated had to have been so incriminating that Berger was willing to risk criminal behavior in order to sanitize the National Archives of these papers.