This is the way I read the rules - I might not be right, but this is what it seems like to me. According to Wings Over Manhattan, "Autogyros ignore all G restrictions, meaning they never have to push the Gs, even for restricted maneuvers". Since they don't have to push, there's no chance of failing and suffering random movement and stress fractures. Autogyros do redline the engine normally, so if a push for speed or acceleration fails, then they would suffer a stress fracture to the nose as standard. It's not clear what happens if an autogyro stalls (pushes deceleration); however, there are no flaps on the autogyro damage diagram, and it says that "an autogyro pilot may choose any maneuver within his movement range", so I would guess that autogyros do not need to roll to push decel.
Good judgement comes from experience. Experience comes from bad judgement.
"Is it heavy?" "Yes." "Then it's expensive - put 'em back." -Jurassic Park
With me surprises are rarely unexpected. - Any Pink Panther movie