In short terms, I would like to share with everyone here the fact that battles on this engine can be made pretty realistic but I don't see mods that do that.
Why someone loses years on mod development, or game development and then makes such an error (yes its huge error if you ask me cos Im medieval/history in general enthusiast).
I never saw mod where battles are realistic and weird thing is, they can be.
Things that are silly, unrealistic and real nonsense in this game (and movies):
1. Infantry in fact never charged except to close the gaps, outflank enemy or attack much weaker opponent when chance is here.
Infantry is charging only in Hollywood movies and it is nonsense. Infantry charge should have penalty, not bonus. Why to come to battle in perfect formation then destroy it with headless running. Source of this information: HEMA instructor of historical marital arts, expert on medieval combat, battles. There is good HEMA videos on youtube explaining what was what in medieval and ancient times regarding battles and duels. Also good source of information are documentaries, BBC is number one. One of the sources: http://youtu.be/leF67yJyzP4
2. Over 90% of ancient and medieval infantry units were spearmen units.
3. Spear units/phalanx/pike were unbeatable by sword units head on (trained ones, professional ones, not peasants with sticks).
4. Spear units (trained ones, professional ones, not peasants with sticks) had problems in woods, mountains, scrub terrain (keeping of formation was crucial for any spear/pike/phalanx unit) and on such terrains sword units could defeat spear units (as Romans did - never head on) - In this game stat ground bonuses or penalties are made prety bad. Spear unit can't have bonus for fighting in woods or scrub.
5. In this game archer ranges are all wrong
6. Catapults never existed as depicted in this game. They were never used in open field battles. Catapult unit in this game is in fact old roman onager siege engine and it was much much weaker than depicted in this game. THey were build under the city walls when city was under siege. After siege they were destroyed.
7. Armor stats are not what you see in game. Same goes for shields. Example: sword quendi has way too weak armor in stats compared to what you see and they are elves with better than human armor.
8. Delay between attacks is again wrong in game, lighter units of same quality should have less delay between attacks than heavily armored units, this way professional light infantry would have more sense.
9. Fight animations are silly and absolutely unrealistic: shield used as counterweight, 360 degrees turns - all Hollywood style nonsense.
10. Where is couched lance? Plate knights not using couched lance? It is concept well before plated knights - from 11 century. Cavalry in game uses 10 century lance tactics.
11. Horses would not charge on still mass of soldiers especially spear units.
12. Cavalry lance should be spent after the charge.
What I wrote is NOT BASED UPON MY OPINION or THINKING, it is based upon expert articles, documentaries, instructors of medieval/historical martial arts views and real medieval manuals that I own (in PDF).