Even though Greek and Macedon both have phallanx, they don't have auxilaries to back them up. If you have Poeni Infantry as your main battle line, and about 2 units of reserve poeni. Then have elephant as your flank guard. Baelaric Slinger in the back. Couple long shield cavalry. This is probably one of the hardest combination to beat.

If you wanna flank their main battle line, you get stomped on by elephants. If you wanna win with missles, you get stoned by slingers. The only way that I can think of is with siege weapons, but by the time people get siege weapons you probably are already at armored elephants, sacred band and sacred cavalry. And then it's even harder to beat.