I'm thinking this is just a case of gamer tilt and some mistakes as far as situational awareness.
I've had some weird engagements at times, and I do have some serious issues with the way the BT guys operate, but at this point I'm thinking they're just really effective and I let my guard down sometimes. For example, one time I was flying 10K above an enemy field in a 109 Gustav, and I dip a wing to take a look at the bandits below. I see a Yak and a few others, about 2-3K below me. A few moments later the Yak is on me, and he shoots me down, and then I find out it was one of the BT guys.
Now, it definitely seemed sketchy from my end. The timing was wack. But, I will admit, it's more than likely that I simply let my guard down. Odds are there were two Yaks, one below me and one above me in the clouds. I probably got bounced from above. Surprises just happen in dogfights, it's a fact I've long since accepted.
I still get pissed off how the BT guys will take cheap shot after cheap shot to take down fighters upping, but at least they're in fighters at all lol. I just try to avoid engagements with them now, and it's been fine for me since then, I've had some really really good fights lately, I just had a fantastic 3 kill sortie in a Gustav 14 just now.
Overall what I'm trying to say is Aces High is a stupidly fun game with a very steep learning curve, and I'm going to keep making the best of it.