Over 200 warheads were fired at each of your craft - even assuming 50% of them were intercepted, that's still enough power to bring down the shields of your relitively lightly shielded ships.
After calculating I have determined that all TNO forces combined only have 364 missile tubes between them. How?
Victory - Class Star Destroyer - 80 Missile Tubes
Multiply this by four, since you have four VSDs present - which gives you 320 Tubes.
The only other ship with missile tubes is the Archangel, which carries 44 tubes.
So,
320 + 44 = 364
And if 50% of them were intercepted, that leaves you with precisely 182 missiles that actually struck the ORS fleet.
Too bad for you.
Edit your post, the shields on ALL of my ships are not down. I have edited my post, so you may post yours. You have three days.