Then a conquest is totally meaningless because a week after you won the battle the conquered nation is fighting you again. What kind of conquest is that? Alexander dies and like 2 seconds latter all those battles are thrown away? at what price victory? Its a hollow victory when your conquest is so temporary that if the winds blows the wrong way everything is lost. A real general is one who conquers with a lasting impression and impact upon the vanquished. Winning a battle with nothing to gain is a folly of manpower and resources.
One of the problems with napolean as a choice is the fact that his ememies basically lost the battle, became french allies and a few months latter formed a new coalition of nations again at war with france.
However, the French clearly won many battles purely on strategy when on all other accounts they were equal or mostly behind in terms of quality and quantity.
Alexander similiarily won such battles but the economy of scale of leadership of these armies was vastly different:
Napolean orchestrated control of up to 500,000 men or more in a campaign. In Russia he had something like 700,000 men plus like another 1/2 million fighting in other parts of the continent…all under his command.
Alexander’s largest army was something like 50,000
I doubt that Alexander could command over a million men w/o an organized system of logistics.
Napoleon invented modern military logistics and understood its value well.