They definitely stop at 3. I'm not sure how well Kun can fair agaisn't two blade master and two master level force users. One who also focuses on SITH alchemy. Krayt, I'm not sure. It's a 2v1. Hmmmmm. A curved hilt and double bladed vs a jar Kai duelist. Tow powerful force weilders vs one? I would have to say the team as bane is possibly a more powerful force user and then Zannah can always use her force illusions to distract while bane can use lightning or TK or speed blitz Krayt.