Macedonians were not hard to beat, I defeated them with the Brutii and the Greeks easily in the beginning , took Corinth, Larissa and thessalonica without much resistance. then they were beaten, they only had 1 settlement left after that which was in Cyrene ( Libya )never seen them expand towards africa really weird.
as for the Gaul, germania thing. the germans I think are better , because of their cosen axemen and sprear warband and of couse berserkers and gothic cavalry