I think Marian men are more expensive than Polybian because the state provides weapons, training and armor. Polybian men are so cheap that is not economical use local soldiers of galia or iberia. With Marian reforms the local auxilia becomes more interesting.

But I can't understand because P, C and M men have the same attack. I was hoping something like more 2 or 3 attack points for M soldiers. I don't think i am going to do this, but is there anyway to change the attack and defense of a unit?