Galctic War difficulty

I've hit what I thought was a wall when I was level 63 and facing level 65 toons on the final node. Kept dying and retreating until RNG worked in my favour with Ahsoka, Rey and Sid completely dodging and dishing out critical hits. Lumi and Barris working together to pull off heals and equalization through heal immunity. That was after 30 attempts of losing and retreating. I barely made it through that final round with my entire team in the red when I finally overcame it. That was just nerve racking to say the least.