Not necessarily, it depends, if China builds a substantial number of Type-055s. Then such a case PLAN would essentially have a greater punch in deploying a combo of Type-055s and Type-052C/Ds. It's about applying tactics and formulating the eight strategy that turns the advantage in your direction. If China uses the correct strategy, then a few less cells on its destroyers than the Sejong Destroyer would not matter. It's probable, if not likely, that if a confrontation ever were to occur (God forbid). Then it would be up against a combined force of Japanese, South Korean and American navies. Taking this into account, PLAN has to make sure that it calculates the appropriate force deployment to counter such a large force.