User blog comment:Jrotc193/Battle Royale/@comment-4829046-20130610030625

That's all just speculation. We don't know their power levels. Igneel is the strongest Fire Dragon but we know nothing about the rest, unless Motherglare makes a reference to Metalicana or Zirconis has a vision of Grandeeney just before he is defeated. But still, why does the Iron Dragon have to be king over all other metals.