Put into perspective, "The Holocaust" ranks only third in 20th century in terms of the numbers of victims. History is rife with holocausts. To claim that only a part of one is "The Holocaust" diminishes all of the victims and exonerates all perpetrators other than those motivated by antisemitism.
I will say the one thing that makes the Nazi Holocaust stand out is the fact that the Nazis had the audacity to film it, and meticulously document it.