It is about momentum.
Turbulence is a motion of the air through which the aircraft is flying and if the aircraft had zero mass it would move with the motion of the air. The wings are not part of the problem, they are still moving through the same air.
The aircraft has mass and velocity therefore it has momentum which will resist any change of motion. A passenger in the Boeing will experience less motion than the passenger in the Cessna because the greater momentum of the Boeing will resist the change of motion dv/dt more. Both passengers experience a G force proportional to the rate of change of motion.
Last edited by The Ancient Geek; 28th Oct 2017 at 11:50.