GAC Question

If they have messages open you could ask them with a "well played, nice clear is there anything I could improve on defence?".

Also as others have said if you think cheating then wait for swgoh.gg and see what happened.

Also and this is slightly tin foil hat territory,  as the aim of any ladder is that we all have around a 50/50 it does feel sometimes that something is ensuring that we all get that 50/50 win rate and RNG just isn't in our favour at all and it is for the opponent. Most likely though is that some opponents are just really good at attacking, or save the right teams for you by scouting you out.

I myself have had a complete nightmare with the Stranger and Mauls DC while my opponents had no issue with mine. Had a look and its because they use LV, and it never clicked for me why my opponents never put down LV on defence. Lesson learnt even if took me 3 rounds to figure it out. Sometimes people are just better at the game than us.