Kaku had longer limbs and legs and thus as a result had more speed and reach.
Jyubra had claws but they fail in comparison to a person with a longer reach and speed having swords.
Even defensively kaku was better since he had a bigger body than jyubra ontop confusing tekkai.
Kaku was superior. Again longer limbs longer legs can cover more ground with speed.
Again kaku who used swords ontop of storm leg technique
Also if you want to include his swords then include Jabura's claws