I need Advice: Jyn Erso

I was surprisingly underwhelmed by a full R1 squad at lvl75 yesterday (mix 3-5 stars g7-8). I fought the same team 2x once in the morning and after work. I had my lvl73 standard droid squad (JE 4*, 86 7*,88 7*, 47 7*, B2 5* all gear7-8) and beat them both times with all 5 of my team still standing. The fight was long for an arena match but they just did hardly any damage.

I'm sure its different when they are lvl'ed higher...at least I hope so because I have been farming them to eventually replace my droids (that are getting hammered by Maul and Nihilus/Dooku)...