Cavalry is insanely weak at the moment, any two handed infantry can take on a cav head on, provided he can thrust with it (glaive, awlpike etc) you name it. Thing is, cavalry currently seem to resort to secret tactic or surprising the enemy from the rear, while correct historically that it was sane to attack with cavalry from the rear, it was not the strength of the cavalry.
In any case, its just ridiculous that most of the cavalry kills come from couching a player from the rear, that hasnt heard/seen/ or is in combat already.
BTW: my fav wep against cav: Long axe, thrust it to stop the cav, it doesnt do much damage but it stops him, and you hack him to pieces.