If they actually do use the top 80, then in that case my opponent’s 17 gear 13 toons and 50+ gear 12 toons are very evenly matched against my gear 13 Grievous and 35 or so gear 12 toons.
I’ve never complained about roster disparity in GA (as I’ve usually been able to outsmart my opponents) but this is a little bit uneven for my tastes. I’ll take my rewards whatever the result, but I’d like it if the matchmaking didn’t pair me with someone with over 250k more character GP than I have every single time.