>>64237868
Knights tend to be very cost efficient in both food and gold that pairs well with other units only really having to worry about certain hard counters.

Cataphracts are far more resource intensive including time but with the necessary upgrades are trash unit remover extraordinaire. They do have a lot more soft counters however which restricts them more to a late game unit once the enemy resources have been depleted.

Now will OP care to actually give us some fucking context?