Plated bullets are not known for holding up intact when fired at high velocity and pressure, or through a comp.
Since most plated bullets are made with a swaged core, they tend to be softer, and shed the copper jacket leading to erratic accuracy when loaded hot. They also need to be gently crimped, relying more on case mouth tension than a hearty crimp. Over crimping can weaken the copper jacket.
True jacketed bullets have a much thicker jacket than a plated bullet, and hold together.
AIM has tried to blend the best of both worlds, by casting a core of a hard lead alloy, then plating the 124gr 9mm bullets with 4.5 thou of copper.