The antifighter platform got me thinking about freighters actually. The only shivan ship that keeps me at bay is an asmodeus. After that i find all other shivan ships very approachable compared to a ****ing asmodeus.
I have put together a list of some nasty freighters when you have to fight them, and some not nasty freighters. Yes i threw in gas miners because they still haul freight (gas) and are stuck in convoys (just like freighters).
The real question at hand is which of these freighters has the best anti fighter array. Antifighter **** for freighters is a little different. Among weapons, it also deals with armor, also why i stated which is the toughest nut to crack

But, also which freighter can perform it's job, keep you alpha one off it's ass, and not jump into a subspace vortex as an explosion and some debris

(it's still funny to send a ball of flames into subspace...oh yes i let that freighter jump out...in a state of vaporization)
But, yes armor lets alpha one keep blasting the freighters ass, and IT JUST WON'T DIE!!! Did i just say GVT Isis

And then weaponry, where alpha one keeps getting blasted to keep him at bay and at distance, just that time of day when you wish you had a maxim, or other wingmates to kill the freighter for you. Oh **** it must be an SFr Asmodeus

Plz keep in mind, this is if you got a one on one with a freighter scenario (you can toss in a couple of more fighters if you want i don't care)

GVFr Triton: 1 hl7, 1 standard flak
The hl7 doesn't do much, but that single flak is pretty nasty and does provide good cover for the triton, after that the hl7 just throws in where it can with the flak.
GVT Isis: 2 Mekhus
It's not the weapon turrets on the damned isis that make it dreadful (but it is nice to be equipped with a mekhu), it's that in fs1 these things are bastards to destroy...they take forever, and they maneuver around like crazy, i'm not sure if in fs2 it's the same story, but i can only imagine something similar.
SFr Asmodeus: 2 Shivan light laser, 1 Shivan heavy laser, 1 standard flak (in fs1 that flak was actually a disruptor)
In fs1 and fs2 this damn freighter i found the hardest to approach. With or without shields, this thing is just wailing on you with non-stop lasers, and in fs2 flak. Also the thing has some good armor, so it takes a while to destroy. A good deal of the time the asmodeus while it's unloading on you and giving you a difficult time, it can pick up cargo and warp out. This is still what i call the least approachable shivan ship in the game, and if i have extra wingmates...lets just say alpha 1 does not take this kill or do it himself.
GTG Zephyrus: 2 Terran turret weak, 2 hl7, 1 standard flak
I've never actually attacked one of these before. Derelict doesn't count (for some reason i have it stuck in my head that tritons, zephyruses, and anukets have one antifighter beam (at least they do in derelict)).
SFr Mephisto: 4 Shivan light lasers
This thing is great at spitting firepower out at you, but it doens't do anything to your ship, i think it's just for deterrant purposes.
SFr Dis: 4 Shivan light lasers
This this is not real great at getting any lasers to hit you, and it's easy to destroy.
GTFr Poseidon: 4 hl7s
This thing can spit some firepower at you and damage you lightly, but you would have destroyed it sooner or later with relative ease.
ST Azrael: 3 Shivan light lasers
I really don't know anything about an azrael, besides it being a transport, and that it has one less laser turret than the mephisto.
PVFr Ma'at: 2 Terran turrets, 1 Mekhu
This thing is a nightmare in fs1, whether you have or haven't shields. Then again somehow laser firepower of any kind in fs1 was a lot speedier and rapid sort of like star wars.
GVFr Satis: 5 Terran turrets
ooooooo, the worst armament i could have possibly seen? The ma'at was still deadlier t
So which freighter does it's job the best? It's pretty obvious which ones don't, it's pretty obvious which ones do. So which freighters actually warp in, survive to humbly grab it's cargo and warpout MAKING YOU A FOOL!!
