I think this list would take the Rebel 3-4 ship Biggs/Lowric build to pieces, and fast.
Systems officer gives Glaive a TL, Glaive's TL gives Vessery a TL, Fleet Officer gives out focus tokens to both defenders. Each D takes a focus or Barrel roll depending on situation.
Vessery shoots first, Tractor beams Biggs, reducing his agility and maybe parking him on a rock. Ruthlessness triggers, you give a damage to Lowric. Immediately shoot again, You have a TL from Glaive and possibly another focus put some damage on Biggs, put another damage on Lowric.
Glaive shoots, puts an Ion on Biggs for a damage (using TL/ focus as needed) Ruthlessness triggers, put another damage on Lowric, shoot again, put more damage (by now probably killing) Biggs and another damage on Lowric. Repeat this until they break formation (easy with tractors and ion) then rip apart the list "ship to ship."
Junkyard Wreckers (100)
Colonel Vessery (39) - TIE Defender
Ruthlessness (3), Tractor Beam (1), TIE/D (0)
Glaive Squadron Pilot (40) - TIE Defender
Ruthlessness (3), Ion Cannon (3), TIE/D (0)
Scimitar Squadron Pilot (21) - TIE Bomber
TIE Shuttle (0), Systems Officer (2), Fleet Officer (3)