If i take reference for the comparison today and 270 BC

Seleucid - America --because it's the superpower of the day , but losing grasp of the world.
Ptolies - China -huge economic power , has the potential to eat away at the superpower of the day.partially isolated position.
Baktria - Brasil -huge resources , ex-american "control" but free now and on it's way to glory
Japan - Carthage -huge fleet , huge economic power , keeps its control on trade routes in that part of the globe , great martial spirit
Sauromatae -russia -Vast lands but little money . has potential to become a sweeping force
Greek states - France -great legacy, great ex-colonies , but not much of a power now
Pahlava -Iran -Little territory but has the potential to launch a continental islam revolution. Different than occidental views and customs .
Dacians - India - peaceful , but you don't rly want to go there without back-up.
Pontos -Canada -little to do except wait for scraps from America
Arverni-Aedui -Britain-Germany...fighting over a shrinking world
Casse --South africa -they own a tip of a world but have huge potential to expand. Quite isolated
Hai -turkey --huge influences , great history but not much in the way of power
Sweboz -pakistan & surroundings -they fight with sticks and stones but once they unite the tribes(Islam) they become a huge force