all mounted units seemvery weak even when charign even from behind. game designs porblems aside taking a lone cavalry unit 1on1 against another unit does not seem efficeint. using wedge seems to make a lot of differece and also i try to sue cavalry to casue a rout rather than actually kill infantry. if u get infantry flanked one charge jsut a fter a volley from your own infantry could be all it takes for the enemy to rout.