The poor execution of Mopar electronics in the Lean Burn and L-Body LM-PM disasters left some deep wounds for many. Eliminating the rotor from the distributor is a huge reliability advantage, for the associated electronics. The distributor Hall sensor in the L-Body was easily failed, because the shutter wheel was mounted in nylon. The shutter wheel would build a charge, that would flash to Hall sensor. Leaving out a rotor and cranking a Mopar VR electronic, can fail the control box from spark strike to pickup.
The COP unit has low parts count, the parts are also less stressed because the drivers have 1/8 th the duty of a single coil system. If one ever fails, the other cylinders will easily get you home. The components used are automotive rated, and have features that limit current and voltages to acceptable levels.
A MSD CDI ignition has more parts, and the discharge capacitor is a major wear item. Typical capacitors in pulse applications have lifetimes rated in a few thousand hours at most.
