As we adamantly demand that Holocaust denial find no quarter, so must we insist that other genocides cannot be denied. By failing to do so, we diminish ourselves and squander the moral authority we gained - gained not only because Jews are commanded to remember, but because Germany owned up to its crimes.
The Armenians and the Jews have much in common: atrocities, expulsion, our own languages and cultures, and schisms within our faiths. But we Jews have been spared one grievous harm: as Berenbaum has noted, the fact that Germany acknowledged the Holocaust enabled the Jews to commemorate it appropriately - not to argue about whether it happened.