How long do you think a capital ship could stand against the firepower of 60 missile frigates?
Quite long, actually, if I read the files correctly.
LRMs are attack type antimedium vs armor capitalship:
DamagePercentBonus:ANTIMEDIUM:CapitalShip 0.75
Which would give them a malus of 25%.
A LRM does 88 damage per shot and shoots every 8 seconds.
60*88*.75=3960
A Kol has quite large shields, add to this shield mitigation:
shieldAbsorbGrowthPerDamage 0.001
shieldAbsorbBaseMin 0.2
shieldAbsorbBaseMax 0.6
After 400 damage, shield mitigation would be at 0.6
To make the calculation easy, I won't make a diff.equation for that.

3960-400=3560
3560*.4=1242
So, one shot against a capital ship would result in 400+1242=1642 damage at max.
Since a Kol has easily over 1800 shield points. The first hit wouldn't even damage its hull.
Now depending on the lvl of the capital ship, it will have quite some armor and hp (hp over 4000, armor over 7 armor (how does the damage calculation with armor works, I wonder?)
So it could survive a surely a second, and highly likely, a third volley.
So, let's say 60 LRM need about half a minute to destroy one lvl 1 Kol.
A LRM itself has about 450hp with 250 shield hp (which isn't enough to bring shield mitigation over .45 btw.).
A full hit of every Kol weapon does 90+36+66+66+36+54=348 damage. (It gets 10% damage boost each lvl and shoots 3% faster each lvl.) It's able to do this amount of damage about every 10 seconds. So it will need about 3 shots per LRM frigate, or half a minute.
So 60 LRM need half a minute to destroy a Kol, while a Kol needs half a minute to destroy one LRM.
A simplified battle could look like this:
10 Kol vs 60 LRM
9 Kol vs 50 LRM
8 Kol vs 41 LRM
8 Kol vs 33 LRM
7 Kol vs 26 LRM
7 Kol vs 19 LRM
6 Kol vs 12 LRM
6 Kol vs 6 LRM
5 Kol vs 0 LRM
The Kol wins!
Of course this would only be with only focus fire (spreading your fire could be better in this case, perhaps (at least for the LRMs).
So, I think it could be quite an interesting battle. Though we will anyway need multiplayer to balance the game, since you can't really balance it against the AI.

PS. I know I left the Cobalts out. I didn't wanted it to be even more complex.

PPS. Research would benefit the Kols more then the LRM, since they don't have much of a hp and shield to increase.
PPPS. 10 high lvl Kols would win this battle anyway.