**even amongst people that focus on historic accuracy in their RPGs/wargames, rarely do two such fans agree on which historic facets are the important ones.
This. As I have been delving deeper into medieval and early modern history, I am struck by how complex, diverse, and varied actual weapons and armor were. Internet experts love to pontificate about the superiority of this weapon or that, and provide their grand theories on a period that lasted ten centuries over 10 million square kilometers, if we just count Europe. Which would be foolish because the history of medieval Europe is deeply tied to the rest of Asia and Africa, from Carthage and the Persian Wars with Greece, to Indian Wootz "Damascus" steel, Islamic Spain, the Crusades, varius invasians over the Steppes from the Hun's to Gengis Khan, etc.
Yes, a rapier would not be effective against plate armor, but niether would an 11th Century "Great war sword" which was forward-weghted to give powerful chopping cuts vs. a 14th Century "Bastard Sword" (Oakshott type XVII) which was designed in the hopes of penitrating plate, because in iron-rich western europe there was a five century arms race between arms and armour.
Yes, the arrows of English longbows were able to punch through plate armor at relatively close range and cause devistating losses to French cavalry charges attacking uphill against a fortified position at Crecy in 1340, but those arrows would bounce off the stronger armor of the knights at Agincourt a century later, though still kill their horses and again stop a French cavalry trying to charge up a muddy hill against a fortified position. And 2000-4000 of those archers would get slaughtered a few years later at Patey by 180 French cavalry who got the jump on them and outflanked them before they could fortify their position.
Medieval knights preferred spears over swords, unless the were in the Carolingian army which primarily relied on swords for mounted combat, or the Normans, who threw their spears in the initial charge and then engaged with swords, with the couched lance charge becoming the primary tactic in IIRC, the 12th C, when the armored heavy cavalry charge would become an unstopable force until stopped by aforementioned longbows (from fortified positions), or Swiss block-of-pikes, or Ayyubib horse archers who would attack and then faint a retreat to draw the heavy cavalry into an ambush and surround them. And that's just a handful of examples.
Not to mention the fact that much of the history is based on incomplete records, church frescos, and scattered archeological finds which are often incomplete, corroded, stripped from their context, or destroyed by wars in the 20th Century. And that historians regularly disagree on interpretation, quality and relevance of evidence, and even authenticity of finds. And much of the scholarship is in Polish or Check or Italian or Spanish and the bibliography on the paper you just read on "Late medieval nomads in the Little Carpathians" includes a translitteration because the regular bibliography includes at least four different alphabets, let alone 8-10 languages.
So tell me again about what was historically accurate in your fantasy game in a completely different universe?
(And I say that as someone who debates whether his Dwarven Ranger uses an Elmslie type 4b or 5a langesmesser (scimitar), and what Oakshott typology one would use for a Dragonslayer Longsword, and whose Dualist fighter uses a rapier that looks identical to the sidesword Grandmaster Jean DeValette used in the Siege of Malta in 1565, because I actually do love historically based flavor in my role-play)