@haavarla : At the time of induction, the Flanker did not have TVC and relied only on aerodynamic forces. The Cobra is simply a deep stall that you recover from and for that the pendulum effect of that long moment arm created by the mass at the tip of that long nose helps in the recovery (as the fact that the airplane is neutrally stable) and obviously in rotating the aircraft on the initial stage. Once in deep stall, you are in post stall maneuvering, what means that aerodynamic forces are not the primarily forces governing the balance of flight but drag (dynamic pressure) and inertia are.
Cg variations are nearly insignificant post stall since the range of variation is usually fairly small considering the distribution of masses along the entire aircraft. What imports most in that domain is the distribution of masses away from the rotation axis.
As an illustration, we know how coupled inertia in roll can affect safe flying if an aircraft is rolling too fast along its main axis.
