Try your Nihilus. His dispell, cd raiser, and his insta kill (kill chirrut or baze) will help you tremendously. It's the skill set in this case that will let you win. So don't worry about gear on offense with Nihilus if he is 9+.
You want to shock baze and if it won't get cleansed than go for chirrut. Only attack chirrut if baze has shock and will not taunt. Don't attack baze's health if he is just going to heal from his hots. Get the other enemy protection bar some. Daze will help you much so chirrut and baze wine counter or gain tm from Rex lead.
Ability block with Vader and raise cd with Nihilus and you can win.
At start try to debuff with basic. Let enemy chirrut cleanse and than debuff with another again. Than let Rex cleanse and after tenacity up wears off is when you should start using your cd with debuffs.
Don't waste your debuffs if it is going to get cleansed next round or if enemy has tenacity up.
Good luck sith rule!
Btw my preferred team is zaul/Zavage/zooku/sid(almost zeta!)/Nihilus. Teams absolutely destroys triple cleanse teams.
Rex/chaze/gk/Nihilus = no problem