Besides this I wonder why a nobleman (and every knight is a nobleman) would be the only escort to a prisoner convoy? The set is lacking an inferior guard. This heaviliy armoured rider wouldn't have the slightest chance to catch the forestman if he escaped into the underwoods.
I agree that the knight is a bit out of place and an archer or footsoldier (like in 6055) would be nice to chase the forestman. However, this use of a knight is no more inappropriate than a BF armored knight being in charge of the siege equipment in 6059
I like both 6055 and 6042 carts. 6055 has a few too many horses while 6042 doesnt have enough. Having more guards would help 6042.