Copenhagen seems to show to me what the meta would look like if Bombing Kwings have not come in force in a lot of areas as of late, and if Dengaroo isn't as prevalent in your area as in others (this is just judging from the lists posted here). x7 list are an incredibly difficult match up for nearly everything, and I do think it is a little stronger than it should be, but at least they struggle against bombs. Rough part is the other Imperial staples struggle even worse against bombs.
Thats true. K-wing bombers are the only real strong counter to the Defenders. There are also lists that are evenly matched against Defenders (like Parattanni, Bobattanni, Fangaroo or other Mindlinks, TLT Kannan, 4 TLT, scum 2 big ships with Party Bus etc) but only against bombers with Sabine crew Defenders are in really weak spot.
Actually, there is another list that does very well against Defenders (and most Imperial Aces, too): Fickle's 2 ARCs plus Biggs. Braylen as the stressmule double stresses a defender (or other ace); Norra then kills it. Biggs then dies. Repeat next round = 2 dead, or nearly so, defenders and Braylen damaged. This leaves Norra with regen vs the one remaining Imperial ship, which Norra will beat even if it takes a couple of rounds.
Even in the hands of a noob like me, I was able to beat every defender I faced without much trouble in a regional with 130 players.
Mind you, that list struggles badly against Old Fenngaroo since the stressing has little effect and only Norra does much damage.