So 2 attack ships:
So its seems like the last two "fixes" (y-wing and advanced) have just added to the attack of the ship.
a-wing: The chardaan refit reduced the cost but the main complaint is still lack of "punch"
That means the only two attack ships left unchanged are the z's (old model) and the tie fighter
While this increase in attack of most ships has helped, its partially nerfed the tie swarm- but its also made 3 attack the standard and 2 attack lacking. As evidence by the plethora of "fix the x-wing" threads.