When I started looking at BC 2.02 EDU file, I've noticed similarity in unit armour & shield values between SS and BC.
Some late units in SS do have a higher armour value than the highest armoured unit in BC, but those units appear in the late period. And at that period, historically, European half-plate and plate armour was much tougher than armour of units in Middle East in 12th century ( as covered in BC) Since missiles damage counts only armour and shield defence ( not defence skill), the missile attack values should be similar to SS , so that meant that I could adapt missile accuracies and values from RC and my SS mod in to BC
On the other hand, defence skill of many units in higher in BC which leads to longer melee battles, which I personally prefer.Also it make infranty to withstand charges better. Even though cavalry charges bonuses about 20% higher in BC than in SS, much higher defence skill make them not as deadly. I did increased some charge bonuses slightly further, some of unit defence skill might have to come down. As I know, RC for SS will have units with slightly higher defence skill. Over here defence skill and charges will have to be adjusted.
The only thing that will screw even the best balance battlefield balance are those smith/armored/guild upgrades. Each weapon upgrade actually adds about 3 ATK to the weapon ( not +1 as shown in unit cards). It changes units stats a lot, especially if weapon has AP attribute. Using common sense, I can understand , that upgrading a sword could lead to a sharper, stronger ones that might add to a cutting power. But upgrading a club, mace or spear shouldn't change much at all. I would rather see smith/armourers upgrading units armour.
We can also set possible upgrades possible for each units and such with swordsmith guilds, I would rather see units gaining experience instead of getting huge weapon upgrades. I might work on that after I done with units balance in EDU.
Or it could be great if BC team includes that in their next version.
I viewed EDU file listed for BC 3.0 . On one hand it has some nice units structure , same as RC with all different unit hierarchy
On the other hand it gives units tons of armour, then gives many weapons AP attribute. Even many spears are AP ( to half the thickness of armour :? Personally, I think that the BC 2.02 EDU requires less overall adjustments and the better place to start with.