But Keizer Ghidorah foguht the 5th largest Godzilla twice and was defeated in both fights. When Final Wars Godzilla burnt and destroyed the main middle head of Keizer Ghidorah then it couldn't generate that head but in 2019 we saw how King Ghidorah regenerated its head. Keizer Ghidorah has small wings which may affect in its flying speed but as its a quadrupedal so it might run faster.