That sounds like a bug in your game, Ive got EB 1.2 and this is the EDU entry for the Pontic scythed chariots.

Code:
;112
type             eastern chariot scythed
dictionary       eastern_chariot_scythed      ; Scythed Chariots
category         cavalry
class            heavy
voice_type       Heavy_1
soldier          eastern_chariot_crew, 10, 10, 1
mount            pontic scythed chariot
mount_effect     elephant -4, horse -2
attributes       sea_faring, frighten_foot, can_run_amok, power_charge
formation        7, 9, 15, 15, 2, square
stat_health      1, 2
stat_pri         10, 50, no, 0, 0, melee, blade, slashing, sword, 0 ,1
stat_pri_attr    area, ap, launching
stat_sec         10, 50, no, 0, 0, melee, blade, slashing, sword, 0 ,1
stat_sec_attr    area, ap, launching
stat_pri_armour  20, 8, 0, metal
stat_sec_armour  14, 5, metal
stat_heat        3
stat_ground      0, 0, -6, -3
stat_mental      6, impetuous, untrained
stat_charge_dist 30
stat_fire_delay  0
stat_food        60, 300
stat_cost        1, 3500, 875, 100, 140, 3500
ownership        carthage
Note the 20 armour for the rider and 14 for the horse.