The values for many (most?) of the armour in the game are all over the place. There'll be two helmets are that are visually the same, except one has mail under it while the other has cloth, but the cloth will have a higher armour value than the one with mail! Or the "white tabard over mail" vs. the "red tabard over mail"—they're visually identical except for in colors, and they have the same stats, except that the white tabard is quite a bit heavier for no apparent reason.
I could go on, but rather than have me list a few dozen individual examples of pieces where the armour values are glitchy, I think it would be best to have the relevant person at Taleworlds carefully go over the values of all of the pieces of armour in the game and assign them more appropriate values. In particular, making sure that pieces which have a graphical model that is clearly less well-armoured than another piece doesn't have a lower armour value, and so on. Cloth shouldn't have more armour stat than mail, etc.
I could go on, but rather than have me list a few dozen individual examples of pieces where the armour values are glitchy, I think it would be best to have the relevant person at Taleworlds carefully go over the values of all of the pieces of armour in the game and assign them more appropriate values. In particular, making sure that pieces which have a graphical model that is clearly less well-armoured than another piece doesn't have a lower armour value, and so on. Cloth shouldn't have more armour stat than mail, etc.