Thr firepower of a 155mm main gun is a weak stream compared to that of MLRS during the attack. And the MLRS' range is unbeatable. And while arty rounds are stable and accurate, they are mince meat facing CIWS. MLRS on the other hand are inaccurate, but if you use guided cluster warhead, they are impossible to intercept w/ their mini size and sheer numbers. They also do more damage on the beach.
PS. And why Smerch? They take 30 minutes to reload! China has its own MLRS.
PS. And why Smerch? They take 30 minutes to reload! China has its own MLRS.