[Aesaar]

The Morena can win against FS1 Orions because FS1 Orions have no decent weapons.  That you have to compare it to 50+ year old destroyers for it to come out on top reveals just how crappy it is.

[HydroAmbience]

Morena was a pain in the ass. Finally I said screw it and went inside the asteroid and blew up the damn thing and then doing a 1-on-1 conflict with the ship which took awhile.

[SpardaSon21]

Or you could just do the shmup thing and shoot the core for massive damage.

[An4ximandros]

Giant enemy warship. Flip her over by using real time positioning thrusters and attack it's weak point for massive damage.

[X3N0-Life-Form]

*Look at the BP2 core tables*
Hmm, it's got a bunch of Karuna-grade massdrivers, which I assume are the forward facing ones, the rest are cruiser-grade.
The Ouster torpedoes actually deals a decent amount of damage, but have a terrible refire rate and can be shot down rather easily. Hell, a single launcher has actually a worst sustained dps than the SGreen (which itself is outstripped by most fighter-grade guns). Good thing it launches swarms of them.

Basically, it's kinda like replacing an Orion's TerSlash by SGreens, and its BGreens by TerSlashes. Hell that Orion-light could possibly win against the McDuff anyway.

[qwadtep]

I don't think the MacDuff is meant to be a real danger anyway. It's just a floating hunk of Kostadin propaganda that was allowed to exist because the Elders want to keep the Gefs as a contingency.

[-Norbert-]

Despite the extended sensor network of the UEF the Gefs have profen quite adapt at staying below the radar, so I think the Elders simply didn't want to commit their forces to a massive search and destroy mission just to get rid of something that can't be used by the enemy anyway.

It's a lot like why the GTVA can't just jump in their destroyers whereever they like. The moment you commit the ship, it's vulnerable to coutnerattack. Or in other words the moment McDuff would have attacked something with his destroyer, it would have been swarmed by UEF strikecraft and taken down, thus the best roles the Morena could serve were as propaganda tool (like qwadtep already said) and as deterrent against attacks on the main hub (most probably against other Gef factions, since the UEF could quite easily bring in a force capable of crushing that ship, even in their pre-war configurations).