i managed to win 3 times so far. I love the operation Brawls.
Tho i had to make a cheesey toxic drone build 
more rewards it seems.
I was using 2 Quasars. But not having to aim speeds up Grinding it.
My second idea was jupiters, solid choice.
Gonna miss the brawls. We’ll probably have to wait a year, (or 6 months idk)