Something else I might add which was probably said a while ago. In RTW, unlike MTW or STW, there are no dedicated classes of troops. Phalangites(Germans not included) and most auxillary infantry all carry around swords for close in fighting so most everyone are technically swordsman. The higher up phalanx units can fight quite well in melee. I wouldn't rely on the old TW system of Cav > Swords > Spear > Cav.

The thing about RTW and phalanxes too is that if you're playing a human player who doesn't form a giant box of phalanx and uses them intellegently, they'll just take them out of phalanx to move and then reform with or without the cover of cavalry. Ph34r the Macedonican Lancers and the Companions.