Well, it was not BR 3.0 it was 4.3, and according to from what I gathered in this thread, is that the P-47 and F6F-5 and up are real menaces they should be feared upon the moment you hear the engines whistling in your ears. I am telling this in my perspective, I do not see them as a problem as overdramatized people make it out to be.
Denying cap and fly for the enemies is a huge favour towards their team because like stated before, it usually cost your team more SP than the cap and flyer can make up for. Capping a zone with multiple teammates will always be more fruitful for the team period.
Edit: As warrior412 addressed. Which maps?