I have found this in another forum, is about armor:
4 armors (1 normal and 3 upgrades)

as many variations as the modelers can put in xD

I just found out that I can make the crest independent from the helmet the unit is wearing...so now MY hoplites wear 2 different crests or none ^^ which aren't always on the same helmets...you might have noticed in the earlier pics that the smaller crest has always been on the helmet with the vanilla RTW texture...

and there can be variations in:
-Helmets
-Heads
-Primary weapons
-Primary upgraded weapons
-Secondary weapons
-Secondary upgraded weapons
-Arms
-Hands
-Legs
-Bodies
-Accessories
-Shields