Armor Upgrades Work Properly

[SMZ]

All you are talking is that unit with armor 4 leather has same protection like unit with armor 1 leather (after upgrade)

well, actually armor 7 flesh (what moded pike militia have) ends up being the same as armor 3 (*7) breastplate (what upgraded pike militia have) - which shoots your whole theory to pieces

Just imagine - game has specific file for units, there are values for protection of unit,but it is not used, instead of this there is some other table where upgrade 1 means armor 4, upgrade 2 armor 5 etc... That dont make sense.

have you even looked at the file? there IS such a table! look, right below stat_pri_armour, is ;stat_armour_ex in which the values to use after upgrades are listed - we know those values aren't just for display, because the display doesn't use them - the display uses +1, +2 & +3... so what are those values for? answer: the game mechanics

type             Pike Militia
dictionary       Pike_Militia      ; Pike Militia
category         infantry
class            spearmen
voice_type       Light
banner faction   main_spear
banner holy      crusade
soldier          Pike_Militia, 60, 0, 1
attributes       sea_faring, hide_forest, can_withdraw, free_upkeep_unit, pike
formation        1.2, 1.2, 2.4, 2.4, 4, square, phalanx
stat_health      1, 0
stat_pri         4, 2, no, 0, 0, melee, melee_blade, piercing, spear, 25, 1
;stat_pri_ex      0, 0, 0
stat_pri_attr    spear, long_pike, spear_bonus_8
stat_sec         0, 0, no, 0, 0, no, melee_simple, blunt, none, 25, 1
;stat_sec_ex      0, 0, 0
stat_sec_attr    no
stat_pri_armour  0, 1, 0, flesh
;stat_armour_ex   0, 4, 5, 7, 1, 0, 0, flesh
stat_sec_armour  0, 0, flesh
stat_heat        2
stat_ground      1, -2, 3, 2
stat_mental      3, normal, highly_trained
stat_charge_dist 10
stat_fire_delay  0
stat_food        60, 300
stat_cost        1, 150, 125, 75, 60, 150, 4, 30
armour_ug_levels 0, 1, 2, 3
armour_ug_models Pike_Militia, Pike_Militia_ug1, Pike_Militia_ug2, Pike_Militia_ug3
ownership        france, hre, spain, portugal, milan, venice, papal_states, sicily
;unit_info        7, 0, 1