B-Wing overperforming?

I took in an Exec triple attacker lineup (TPO, Razorcrest and IG-2000) against a Rebel fleet. I assumed they had the B-Wing since they were so high up the ranks.

They promptly took about 11 turns before I had taken my first. Stood no chance. I think it might be just a little bit overpowered to not only immediately call in a reinforcement, but then immediately use your ult which grants your entire team two turns each.

Inevitably, there's going to be people saying "skill issue", but I really don't think a single and easily accessible marquee should elevate a fleet to perform better than something that requires far greater investment like the Executor.