Each weapon system on each individual fighter is a separate gun and is independently reduced by GEG. Against fighters, it's strong. Against bombers, you really care about your dodge.
There is ZERO reason to take the horrid 1 Battle:3 Skirmish breakdown. In every case where you can do this, you can also break down 1 Battle to 2 Raid and 1 Raid to 2 Skirmish. Anyone who does buy down like this is, given the revised FAP breakdown, a total idiot or very very very generous to opponents.
So, 4 isn't right, but 3 isn't either. The Ma'cu used to carry 1 Battle FAP in its hangars. There's no reason to re-evaluate this that I can see (you don't see Drakh dominating tourneys like you'd expect; if it was bad, we'd have seen it at the Centauri-Army of Light event held at Mongoose; there were a LOT of Drakh there, and the Gaim still dominated with but 2 fleets.). The Amu is over, but I haven't heard much of a cry of horror about the Drakh offhand.
Sulust vs. Ma'cu on its own is intriguing, but I'll take the Sulust. More chances to crit, not Lumbering, and more chances for criticals with the 4 dice of precise. Longer range, too --- I think the Sulust is a high-end raid ship, of course (it was on my list of 20 to fix, towards the very bottom of the list).
Others can and do have the resources to destroy Bombers in quantity: pak'ma'ra (web), Narn (mines), 3rd and Crusade (Starfury dogfighters), Minbari (Tishats, although rare), Vree (Zorth), Centauri (Razik, Sentri), Gaim (mines, fighter hordes), Vorlons (fighter-portable antifighter weaponry+decent speed+good initiative), Brakiri (Takata mines, very rare), ISA (enhanced Nials, although rare), Psicorps (Black Omegas), Shadows (new Shadow Fighters are EXCELLENT against bombers, espeicially one-on-one.)
The Dilgar, mid-to-late EA, and the Brakiri have their own bombers to go bomber-for-bomber, as do the Vorlons.
Abbai have to lean on their Quad-arrays for the task (while well suited, it comes at the cost of main firepower). Drazi need help because their carrier stinks and you usually don't have enough Sky Serpents. And that leaves our last race with no long-term answer, the Drakh, who just end up hoping the GEG holds.