Can you tell us how exactly you fight the Chaze Jyn Wiggs team then?
Do you use "Death from Above" first and spam AoE, then next round Execute on Chirrut?
I used this tactics but if the enemy's Biggs was not ability blocked or the execute is evaded, it is a loss.
Also my following Wiggs attacks need to crit. With other words, I need 3x luck (AB on Biggs + no evasion of execute + Wiggs crit). Since the dolphins (and Chaze players are dolphins) normally are a few levels higher than me, they also have the lvl 80-gear (X + next omegas), while I still need to play with gear IX and only the 1st special omega'd. So not exactly "no problems" here.