Given how old that monitor looks, I was thinking more "Godzilla and co.'s reaction to seeing the 1998 American Godzilla for the first time" (the way their faces look makes me think more along the lines of "WTF is this shit?!").

Godzilla: "I am so not that scrawny! And where's my nuclear breath?!"

Gamera: "How are the Americans worse shots than the Japanese?!"

Mechagodzilla: "That's a lot of fish!"