Well, at least Alexander succeded in conquering Persia, Afghanistan, Pakistan, Iraq, Egypt and all of middle east (even without the money and stealth bombers). Clinton like his predecessors, as well as followers only managed to pass by and turn all their allies into enemies
As for Gilgamesh, God, however I like him in F/UC, his story is one of a jerk that was slaughtering people and then angsting... OK, for its time it was good, but then it's not like there is anything else from then to compare it to
And finally King Arthur... what a loser... his wife cheats him with his best friend, his son betrays him, and pretty much he leads his coutry to destruction... trully the stuff of legends