Agreed or he could just have turn into separate molecules like he did with a celestial one time but I guess sometimes Characters powers have to be turned down a little for the story to work, I donīt think it worked here because this happened in a data page, we were not shown the circunstances so we donīt know what happened there. I donīt mind Magneto dying on a mission but I would like for it to mean something more than to fill a data page.