Delta3,
While I love simulation, and am very impressed with your work, Delta3, I am quite skeptical of this particular result! It is just too wonderful.
While in a 40 degree bank, you build 20% more thrust (11200/9307 newtons) you spend 5% less power (111/106 Hp).
This result is about 20% better than IGE vs OGE!
Some probable ways to get that result:
Decel at 2 knots per second, or about 0.1 G of Nx. This is no where near trim, and probably accounts for the power drop and the inflow effects.
Climb 100 feet in 4 seconds (1500 fpm). This will also throw off the calculations, and make some nice inflow of its own.
Can I suggest developing some maneuver controllers that feed back the set parameters to the controls to maintain airspeed and altitude. this might help to produce more trimmed results.