An Idea I had was to ram 1 ship and go for the other while your other ships also try to stay outside of the rammed ships arc and support fire against the other 1.

any ideas?

Swarms will plug up their escape routes and actions

I haven't lost two Duel aggressor while flying bbbbz

Swarm builds imo can beat the, just have to be aggressive.

One good thing about facing duel aggressor is at least they don't have turrets

Which means they have to come straight at you at some point. Block, action deny and roll a lot of dice.

And keep asteroids cluttered

Well that the thing, my current build is a decimator/interceptor I don't have the luxury to have swarms or mini swarm as I don't have the $$ for it.

So what are you flying?

What do you own?

May help knowing what you have for upgrades

(though you can alway proxy is just playing friendly games)

My current build is

RAC

Predator

Eng upgrade

Gunner

Ysanne Isard

Rebel Captive

Soontir Fel

PTL

Auto Thrusters

Stealth device

Royal tie guard

So a standard RAC + Fel. Well, you pretty much lose if RAC dies, since its really hard for Fel to beat 2 aggressors by himself. On the other hand, you have the PS advantage, so arc-dodging is your friend. If you kill one (or bring it really low in health) before RAC dies, Fel might finish it off---although its tricky with 2 of them. You want to be range 2 from the one you're trying to kill and either out of arc or range 3 from the other IG....can be tough!

You've got stress and high-PS arc-dodgers in your list: two things that brobots hate. Use both of those to your advantage -- dodge at least one arc if you can, and let the other suck on Rebel Captive. Also, use the board edge toward your advantage; in the case of RACFel, I would set one of the two up as bait along the board edge and then get that ship right out of dodge as soon as they take the bait. Then your flanker has shots on two ships with nowhere to go.

Don't ram at first, but once Chiraneau starts taking fire, feel free to crash him. Not getting shot at is your best defense.

Yup. This

Against a two ship build if chireaneau takes fire, stick to one like glue

Now he can only shoot with one ship.

Chireaneau with predator doesn't really need actions

Every player's number 1 tool for dealing with the Robots should be asteroids. Aggressors are fast, large-based, and fixed arc. This means they have to turn around a lot, and they care a lot about where they move. You want to use asteroids to create an area of the board where they become more predicable and/or can't make the optimal moves to keep their guns pointed at theirs.