User blog comment:MrPacheco101/Sky Demons: Fire Rodan vs. Super Gyaos/@comment-2187516-20110419023222

Well, I looked at both their bios at toho kingdom and according to them,

Fir Rodan is 70 meters and he can fly at mach 3.

but super gyaos is 85 meters and can Fly at mach 4.2.

Thererfore is Gyaos is larger and faster. His sonic ray will cut rodan to ribbons and he can confuse him with his gas. (wow, that sounded so wrong.)