Armenian genocide happened less than 10 years after this, happened during the wartime and inside the war zone, caused death of 5 times less people and there are actually remarkable claims against it. So a better question would be why the Armenian genocide is better known than this event. read more
But to your question: There were no Allied Liberators for the Armenians, bearing cameras and film gear, and reporting the Ottoman’s atrocities back to High Command. read more
It is always a good method for a historian to compare events to understand them better, but to use the comparison as proof of genocide, or to create misleading or unrelated parallels between the Holocaust and the Armenian Genocide is wrong. read more