Japanese Aegis cruisers and a new size competition

What is most interesting about Japan's planned Aegis-equipped cruisers?

Their very large size may pressure China and allied navies to respond, while Britain delays fixing the Type 83's dimensions until it can judge the emerging benchmark.

The ships' scale would matter beyond their immediate combat systems because other navies will compare their own designs against them. China's preference for leading ship-size categories and Britain's reluctance to announce a Type 83 size too early could encourage a displacement competition. Navies may build larger flagship combatants partly to avoid fielding a visibly smaller design.