lets be fair.
turning in circles in a furball is as easy as pointing the nose up, then down.
shooting planes that are already engaged is so easy a cave man could do it.
I would ask you which is more challenging...fighting against several planes in which you don't hold the advantage, and are probably in at a disadvantage....or fighting against a single plane in which you hold a significant advantage?...then add a few friends. SA is important to every type of pilot, and is not more important to any single style but equally important to both. Though while furballing, it will be stressed more as you are constantly thinking about your target, and the 6 guys trying to pick you while you fight.
I don't think using a planes ability to turn is a fair assesment of why turn fighting is easier than bnz'ing. Maybe look at who's flying it, gun packages, ability to disengage, and the manner in which it is flown. You can bnz and run in any plane. Maybe another example would be if noobs are choosing the N1K, and flying in hoardes at all times, vulching fields etc, you might expect k/d and k/t for the plane type to be fairly high...though individual stats somewhat low.
I generally choose to furball, I expect to be shot down many times. I wouldn't try to call someone out who picked my plane, or ran from a fight, eject on sight of contact, or any of the 100 dweeby lame things I usually see. But when I see stuff that is lame, dweeby, gamey, I think of the player as such. A picker is a picker. A vulcher is a vulcher. A furballer a furballer. No need to justify, or try to explain which is better, which takes more skill, it is what it is. As a furballer, I fully embrace the idea that I don't usually drop bombs, I don't usually listen to what others tell me to do, and go about my gameplay as carefree as possible. A bnz'r (for example) should just embrace their profession and realize they want to have stats/score, they want to never fight from a disadvantage, never take any chances. It's not right or wrong.