Agreed...
Capital Ships are a great way to get powerful, in fact, I Generally Build a Kol within the first five minutes to get start killing the militias so I can settle them because militias, unless containing Kodiaks, fall at the feet before a battleship, BUT...later in the game, I mass produce Kodiaks, Cielios, and Javelis MRL frigates. Kodiaks are a great first line because of intercept and there insane firepower, plus Cielios can buff them and Javelises can pound away from long range...These are Accompanied by a few Capital Ships like a couple Kols and a Sova and a Dunov, and if later in the game a Marza, but NEVER a Akkan!!! They are good one-on-one, but as a fleet ship they are lacking...I generally have one accompanied by some cobalts and a Kol, this way if flanked, I can always use the Akkan to settle and use the planet's soon-to-be-built defenses, and use the Cobalts and the Kol to Knock out the majority of the forces.
In one-on-one, the Akkan can win, but in the majority of cases, the Kol which is a
BATTLESHIP can obliterate most other capitals, especially once capable of finest hour.

The bottom line is, the Akkan is made to defend itself versus SMALL offenders, but is cannon fodder versus more than one ship. The bottom line is I don't even use it in my main fleet, I use it in a second rear fleet the colonizes the planets I just killed...