Ulti Res Rey vs Ulti FO Kylo: bloody and messy

I beat ultimate kylo all the time with ult rey.
Use jkr fast cd gas, kenobi l3, kylu goes and sets off reys whirlwind, do not use. Jkr turn mark sith trooper and kill first.
Eventually kylo will ultimate, then you use your ultimate. Rey will get the chance to ultimate first, dont use it, just wait.
Kylo ultimate runs out, you are clearing out the rest of team. Rey ultimate will kill kylo.
I do have offence set on rey