Prometheus... You're comparing light peltasts and mobs who are running in a hunching position with spearmen who are standing erect. It's like taking two straws of equal length, bending one at a 90 degree angle, setting them parallel to each other and saying the bent one's shorter. I want to see you bring a picture, comparing the heights of actual Roman Legionaries with the barbarians, not the roman civilians (who have never been bred or trained for combat) with warrior barbarians. THEN we'll talk.