@mapleleaf cv,
There are far too many books by far too many people who lived in this climate to disagree. Even if it was 1 million Jews, it is still a Holocaust. What is the magic number? is it 6 million, 4 million or what?
Nevertheless, German Nazi's murdered and tortured hundreds of thousands of people. That's enough for anyone.
Your document doesn't mean much. The Nazis had total control over who, when and how people were seen by the Red Cross. They could direct who was and who was not to be counted.
Then there are the dates; the document does not cover all the camps throughout the entire war.
Also, the Germans forged documents to hide what they were really doing. The "solution" was a military secret.