I honestly don't think that Outmaneuver with Brath (or anyone else) is any great 3PO/Falcon killer. You'll want to focus fire, and that means 3PO will be usable against someone. I think TIE fighters are still the best anti-Falcon tool.
The logical fallacy of your argument is that in any list with more than 1 ship OP30 is going to be used. Outmaneuver onr Rexler HLC mitigates this by allowing you to roll 4 dice to his 0 evade; You can easily win a 1v1 if you trail his rear arc. TIEs are good as well, but swarms lose out to Phantom+mini swarms.
Are you sure about this? It's hard to do the math on Falcon with Gunner/Luke and/or Predator, but my rough calculations suggest that Brath loses the straight up fight. Remember, Falcon can pretty much always Evade, as it has the other things to boost offense. It's a more expensive ship kitted this way, but it's more common, I think. Without Falcon Title and Evade, it gets pretty close, but it's probably not something I'd bank on in the end game. I assume concentrating fire is the best play, if it's an option. My point is that you concentrate on a 3PO Falcon first, because they effectively have 1-2 extra hit points each turn, so it's best if you minimize the number of turns you have to shoot at them, which means more guns against 3PO/Falcon. Then you turn your remaining guns on the escorts, because the escorts won't have the extra hit points each turn, so taking longer to kill them is acceptable.
Also, are you sure you've read my posts? I advocated mini-swarm + PS 10 HLC carrier (Brath or Fett) to mitigate Phantoms.
And seriously, I can't really believe I've seen two different people advocate for splitting fire as a good strategy.