I'm a noob, but I think I have it...maybe.
There is a statement missing from the "Breaking Down Fleet Allocation Points" section of the FAQ (p. 2) which would limit all subsequent points breakdowns to a single FAP and one level lower.
This would explain why 3 Battle, 1 Raid and 2 Skirmish appears, but not 3 Battle and 4 Skirmish. In other words, one cannot take Skirmish with Battle unless one has at least one Raid Ship.
If one is playing a 1 FAP Armageddon level game, one could either take 8 Dag'Kars, 7 Dag'Kars and some other combination of smaller ships, 2 Dag'Kars with some combination of larger ships or 1 Dag'Kar and some combination of both larger and smaller ships. One could not take 3 Dag'Kars and a Bin'Tak, because to get the Bin'Tak, the first purchase must be of 1 Bin'Tak and 1 War point split into 2 Battle points--A G'Quan and 1 Battle point split into 2 Raid points. Thus one can only get a Bin'Tak, a G'Quan and 2 Dag'Kars, not a Bin'Tak and 4 Dag'Kars.
This is useful for limiting certain ships...like Dag'Kars
This, of course, assumes that the chart has expressed the designer's intentions correctly.
*EDIT*
@Poi: --*HONK*--