There are not nearly enough numbers here.
Seriously. More numbers....
advent: 42hp/fighter*9 = 378hp/squad 78.75hp/bomber*7 = 551.25 hp/squad
Vasari: 97.75hp/fighter*4 = 391hp/squad 175hp/bomber*3 = 525 hp/squad
TEC: 63hp/fighter*6 = 378hp/squad 110hp/bomber*5 = 550 hp/squad
Max upgrades (no pacts):
Advent: 65hp/fighter*9 = 585hp/squad 121.875hp/bomber*7 = 853.125 hp/squad
Vasari: 154.7hp/fighter*4 = 618.8hp/squad 273hp/bomber*3 = 819 hp/squad
TEC: 105.3hp/fighter*6 = 631.8hp/squad 182hp/bomber*5 = 910 hp/squad
DAMAGE: (all fighters have 12 second cooldown, all bombers have 13.5 second cooldown)
advent: 16damage/fighter*9 = 144damage/squad 34.41damage/bomber*7 = 240.87damage/squad
Vasari: 30.75damage/fighter*4 = 123damage/squad 76.9damage/bomber*3 = 230.7 damage/squad
TEC: 19.5damage/fighter*6 = 117damage/squad 44.4damage/bomber*5 = 222 damage/squad
Max upgrades (no pacts):
advent: 20.8damage/fighter*9 = 187.2damage/squad 44.73damage/bomber*7 = 313.13damage/squad
(vs no shields, raw damage)
Vasari: 36.9damage/fighter*4 = 147.6damage/squad 92.28damage/bomber*3 = 276.84 damage/squad
(vs 60% shield mitigation, normalized for comparison )
Vasari: 53.5damage/fighter*4 = 214damage/squad 133.8damage/bomber*3 = 401.42 damage/squad
(vs 70% mitigation (lv5 cap), normalized for comparison) ^^^ so close!!11
Vasari: 62.73damage/fighter*4 = 250.92damage/squad 156.876damage/bomber*3 = 470.63 damage/squad
TEC: 25.35damage/fighter*6 = 152.1damage/squad 57.72damage/bomber*5 = 288.6 damage/squad
flack do Advent: 18 dps Tec: 15.33 dps Vas: 16.33 dps (normalizing to 4 fleet supply...: 13.067)
Upgraded: Advent: 23.4 Tec: 19.93 dps Vas: 19.6 dps (normalizing to 4 fleet supply...: 15.68)
Now, damage modifiers...
Flack vs Fighters has 75%*1.333 = 100% (which... for a counter is very low mind you.
fighters vs fighters has 65% *100% =65% (which... is pathetic.)
Flack vs bombers is 75% * 75% = 56.25% (which... is slighly more effective than throwing your flack at heavy cruisers)
fighters vs bombers is 75% * 200% = 150% (which... should be effective.)
SO... assuming everything is in range and stuff... and every gun can fire (ha!)...
(well, honestly... its not that simple... one needs to take into account the fact that... well, a LOT of damage is wasted on overkilling fighters/bombers...) More is wasted on flack guns sitting idle (worst case senerio = hold position = 1/4 damage done.... 1/2 damage if you micro well...
it takes an advent flack frig (best) 16 shots to kill a vasari fighter squad... : 20 seconds.
it takes an advent flack frig 47 shots to kill a an advent bomber squad... : 58.33 seconds.
it takes an advent fighter squad 21 shots for it to kill an advent bomber squad. : 37.3 seconds.
it takes an advent fighter squad 27 shots for it to kill an advent fighter squad : 55.4 seconds
If we assume that the strike craft commander is not a complete moron... we can go ahead and double the flack vs stuff kill times...
So... maybe hopefully... it should take just as long as a flack frig to kill a fighter squad as it takes a fighter squad to kill a bomber squad. And it takes about 3x as long for a flack frig to kill a bomber squad than it takes a fighter squad to kill a bomber squad.
And i really should have done this stuff in excell or something... but unless someone has some imput... i think i am done for a bit.