Very good looking ship with a good alpha damage bite, and pretty satisfying turret fire. Popped some of my fancy new "hardcore" pirates like pinatas, messed up their puny station, left with just a couple patchable holes, good time
Especially love the missile loading room, nice touch.
Turrets likely did most the job, 2 bottom ones are 3000DPS each, the turrets on its back deal 300,000 damage as a pair of rockets, plus the other tiny defence turrets.
Since your pirate force didnt manage to kill a non-frontline ship, perhaps you didnt use enough of them to match its block count, or they have something "wrong" with them that allowed the ship to kill them so "easily"...