not really understading the rules, if the battle points determine the outcome, the spartans are kicking ass. How are the persians winning if they are only worth 1bp?
Currently:
Perisians: 17.623= 17(ish) BP
Immortals: 3= 300BP
Total- 317(ish) BP

Spartans: 2= 2000BP
Athenians: 2= 200BP
Total- 2200BP

Wouldnt the spartans and athenians be winning?

"The outcome of the match will determined comparing BP of the two factions: the faction that gains the highest number of BP will win the challenge"