Don't be confused into thinking PCM (Fail-safe) can save your airplane. It's my understanding when the receiver locks into "Fail-safe" you are not going to regain control of the aircraft. However, there is some likelihood of regaining control of an FM PPM airplane because many times interference goes away, or is intermittent. The ability to program what will happen in failsafe would really only keep a stable trainer or sailplane from flying away if fail safe is programed to do so. Our locked-out and fail-safed 0-0 sport and competition airplanes are going to crash. Low throttle will help and putting the airplane into a spin could mitigate the damage. Any crash, be it a fail-safed PCM or a an interfered with FM-PPM is dangerous and to think one is less so than the other would be difficult to quantify. I will give you low throttle being better!

I think it is better to espouse PCM due to its' far better selectivity and interference rejection abilities, then to pose slim hope of failsafe causing safe crashes or worse; less damage to the airplane in the event of an interference incidence.