Being diverse=/=best army. Seriously, the Roman auxillaries made up somewhere around half the army. They came from various different backgrounds, had various different fighting styles, etc. While Roman cavalry was not good, Roman auxillary cavalry was pretty good. Their archers were usually auxillary archers, and in the east, specifically the Syrian archers, they did very well against the Persians.Bump/ why macadon is the best
A, yes it fell apart when Alexander the Great died but he died young evan for his time, give him a few more years and you'll have a stable empire
B, it steam rolled Persia
C, instead of having the conquered people greekify the Greeks adapted to the new lands
D, it was the most diverse army
Macadon : Speerman, archers, Calvary, Swords men, Chariots, Elephants
Rome: Leigionares, Aluxuries, Archers, Calvary AND only the Legionaries were really respected.
Plus, you know, the Roman army continually bested the Hellenistic armies (though I admit, give the Hellenistic armies some commanders who know how to use them right, and the Romans should lose some of their major battles like Magnesia).