I think we at EB rather have come to the realization that the hallmark of cavalry, regardless of type, is tactical flexibility; In normal circumstances they can outrun any infantry, and they are able to pack a punch (To certain degrees individually). The heaviest of cavalry can give the heaviest of infantry a run for their money, but for clear reasons, they will never be as good in melee. Another important thing to remember is that the player more or less is reluctant to sacrifice cavalry than infantry, one factor is the cost, the other is that infantry in general lacks that decisive punch of surprise that only cavalry is able to provide (By a swift flank attack to the wings or the rear).
One should not forget the fundamental military axioms of the infantry being the bedrock, bulwark or the anchor in battle, and cavalry being the "arms"; Something that has been attested in the "hammer and anvil" tactic. Now of course, there will always be room for expansion or improvement to the statistics, and currently we have some ideas on how to "improve" cavalry, but we cannot break the fundamental principles of these axioms. Only a very few cavalry in the game are able to be battle-winners, but their abilities are off-set by a high expenditure range, restrictions to recruitment, and the fact that there are ways to counter them, more so than in Vanilla. Soon, much thanks to the capabilities of M2TW, we may consider even more ways of restricting the usage of extremely heavy armed and armoured cavalry; They should decide battles through shrewd deployment, not because their leader are able to spam them endlessly with exclusively heavy cataphract armies.
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