What Siaerra said. Much of their tactics and strategic skills was passed on to them, they were moulded by those armies. I mean, without the Macedonian phalanx and all the recent changes in the army and state by Phillip II, Alexander couldn't be the conqueror he was at that particular time and place. Much like that, Genghis would be just a smelly warlord if there weren't the hundreds of years of horse-archers, their tactis and so on. Sure, personality-wise, we could compare them and they were undoubtedly great individuals and minds(to do all the things they done), but without their respective armies, what's the point of comparing them as military commanders?
Now, Nike, I relly understand what you are saying and you are right, from a point of view. But keep in mind that we are not comparing them Deadliest Warrior style(God forbid, we don't have the substantial amount of pig carcasses for that purpose), but instead take each commander(and army, of course) seperately and then we are trying to "flatten" the differences and adjust them to a point that they would be comparable(excuse my silly use of English). For instance, a couple of posts back, we tried to use the Scythian or Parthian horse archers as a medium tp resemble the Mongols and "pit" them into battle with Alexander. Yes, armchair discussion material, but we couldn't compare any personailities from different eras otherwise.
Now, Nike, I relly understand what you are saying and you are right, from a point of view. But keep in mind that we are not comparing them Deadliest Warrior style(God forbid, we don't have the substantial amount of pig carcasses for that purpose), but instead take each commander(and army, of course) seperately and then we are trying to "flatten" the differences and adjust them to a point that they would be comparable(excuse my silly use of English). For instance, a couple of posts back, we tried to use the Scythian or Parthian horse archers as a medium tp resemble the Mongols and "pit" them into battle with Alexander. Yes, armchair discussion material, but we couldn't compare any personailities from different eras otherwise.