Not only is the Japanese TOE superior but its training and doctrine are American ones. In essence, this is a Japanese owned American AF, with the stated role of supporting American operations. Let's face it. Any actual defence of Japan would be American commanded with American forces. Thus, the Japanese must be able (and do) fit into American strike packages.
As stated before, the Chinese do not think airpower, and the job of the AF is to keep bad guy's birds off their bellycrawlers' backs. Thus, the Chinese has yet to exploit the full potential of an actual air doctrine.
Japan Air Self Defence Force
Nihon Koku Jieitai