I can see your point as my force of 80k archers was wiped by a force of 15k AT but you have to learn to adapt. Scouts can move across the field in one round and can do some damage against AT. With the appropriate force of scouts, one can wipe 15k AT and then send the real force in to clean up.

There's also dozens of threads on this so you might want to go search those and out and add your tidbits and suggestions to them.