Cavalry and chariots against infantry

[Vindex]

There is a reason why for example in 1302 Robert II, count of Artois, bought 5 "great combat horses" for 280 livres each (on average), 2 "cart-horses" for 50 livres each, one "fast horse" for 60 livres, 14 "nags" for 34 livres each and 3 "small horses" for 12 livres each. As you can see one "great combat horse" was worth as much as 5 "fast horses", 6 "cart-horses", 8 "nags" and 23 "small horses".

But among horses physically fit and trained for combat there was still a considerable variety of quality.

Andrew Ayton's book "Knights and Warhorses" is particularly good in this field (pardon the pun), although it is restricted to records from the reign of Edward III.