Hmm, let me see if I have the problem straight before I go on: the original problems with RTW were that light cavalry shouldn't be able to wipe the floor with heavy infantry in a head on charge? (I remember my share of insta-routs). If I recall Caesar, he seemed to say more than once something about his cavalry starting to rout again. Should heavy infantry (and especially ones with spears, and even more so the phalanxes) have the "scare cavalry" attribute? Though I suppose the problem being that cataphracts might not be quite as frightened of sword infantry.