Skjold and Visby do not need to select amongst a variety of modules, nor do they need to be escorted by other Visbys/Skjolds with specialist equipment since those ships are already equipped for multi-purpose operations. In WWII there weren't many anti-submarine homing torpedos so I suppose the equivalent would have been depth-charges. I doubt is the Griffin missile would have impressed them much set against a battery of 6" guns which out-range Griffin or Hellfire. The LCS is not particularly stealthy compared to the Skjold or the Visby. There were no helicopters in WWII so, again, the equivalent would have been float-planes.