1. When comparing the combat capabilities of the Type 055 missile destroyer to the Japanese under-construction 27DDG missile destroyer, the former exhibits superiority in technological aspects.2. In essence, the 27DDG missile destroyer represents a modest upgrade to Japan's Atago-class destroyers. Its modifications are limited, and it operates under constraints due to American policies, preventing it from possessing complete land-to-sea strike capabilities.3. The primary operational role of the 27DDG destroyer is focused on air defense and antisubmarine warfare; however, its ability to independently upgrade its key systems is restricted due to its reliance on American supply chains.4. The Type 055 missile destroyer is comparable to the 27DDG in terms of expanding the hull and propulsion system, with both ships having similar navigational capabilities.5. The Type 055 destroyer features an integrated mast design that enhances its stealth performance.6. Equipped with advanced phased-array radar and a universal vertical launch system, the Type 055 missile destroyer significantly outstrips the 27DDG in comprehensive strike capability.7. With the commissioning of the Zhi-20 anti-submarine helicopter, the Type 055 missile destroyer has effectively addressed any deficiencies in its anti-submarine capabilities.8. Therefore, considering all aspects, the Type 055 missile destroyer holds a comprehensive lead over Japan's 27DDG missile destroyer in terms of technology and combat power.