I'm not sure this is actually a thing, we must have different definitions of effective
when 4 cybran destro kill a strat in 1 path, i guess you can say they are effective for a unit that is design to bombard base/naval army from distance. (3 destro kill the strat in 2 path, that is not even enough to kill a destro)
moreover about torpedo bomber and frigate, even 10 torpedo bomber doesn't kill 10 frigate from a fleet of 20 frigates. Though frigate are not suppose to be an aa boat, and torpedo bomber are design to win against naval unit. (the cost in mass of a frigate = cost in mass of torpedo bomber. But the price in e is way higher for torpedo bomber)
If you are not convinced by the power of actual aa, i advice you (like you said) to do 5-6 1v1 game against opponent of your level, where you try to rush T2 air pretty fast against cybran. You may succeed 1 or twice, but i can guaranty you that i'll be hard. (exemple of map : roanoke and seraphim glacier for 20x20 map, and white fire for 10x10 map)
PS : i prefer to test on roanoke/white fire for exemple since T1 naval stage is important for killing T1 mexx. But Seraphim glacier is a good way to show how it is easy to get big fleet of frigate (tons of mass, and low BT of frigate)
afterward you may want to test the "new" aa in 1v1 and draw conclusion from this. (if nerf is too strong or not)
Even if your point of view is important, it would have a lot more impact on us if you had been playing the beta a bit.