Allright, i really expected this argument "We orientated on historical sources" and stuff. And i appreciate that, because i love historical accuracy too. But there is one thing that is even more important then hsitorical accuracy: Realism.
What i mean is pretty simple. You see a a unitcard, you expect something heavy and you see: Only a minority is wearing the actual armour. Some examples:
This unit is obviously supposed to be heavy, just look at his armour-stats: 6 armour, which is one of the highest possible armour merits, but the half is wearing only a helmet and thin clothing. How can you justify 6 armour for them? They should have maybe 3 armour. But there are even better examples.
Just look at this. 5 armour. And for what? Because maybe 5 of the 25 man wearing a chainmail. The rest weares thin clothing or is barchested (!!!). What justify 5 armour for an almost naked man? Get he protected by an armour of light or something? An invisible force? These guys will survive a lot of arrows, just because were are a very few soldiers which wearing a chainmail. THIS is unrealistic and THIS is immersion-breaking. If you want to represent, that only a minority wore chainmail armour make the units A) smaller or B)more expensive or C)less avaible in campaign or D)split them up in two units. Mixing these crassly different "armours" and still giving them a such high armour merit was a bad design choice in my opinion.
An other good example:
Uh yes, the Gallic knights. The heaviest cavalry the Gaul can afford. 8 Armour. The max for a cavalry unit riding an unarmoured horse. And look how the description praise their chainmail, how well it does protect these elite-warriors. And then this: Again a minority actual wears chainmail armour, the others are wearing a linothorax (Acceptable, but of course no comparison to a chainmail armour) or again their thin clothing. Yes, of course its historical that some Nobles dont weared chainmail armour, but giving them 8 (!) armour is unrealistic. They will survive as much as their armoured companions do. And this is unrealistic. And what is unrealistic, breaks immersion.