In the next few weeks, I think Spike TV's Deadliest Warrior is doing a matchup of Genghis Khan vs Hannibal. So I suppose we could then use that to further fuel the debate.

And what about Attaturk or Paul Emil von Lettow Vorbeck? Attaturk managed to defeat the allies at Gallipoli and eventually went on to form the nucleus of the movement which defeated the foreign invaders of Turkey and enabled Turkey to negotiate a new peace treaty with the allies.

And Paul Emil von Lettow Vorbeck was the German commander in Tanganyika in WW1 who managed with inferior numbers to fight off various British and Belgian armies and by the end of the war, was wandering into British territory.