They also speak about how he's a test pilot that tried newest planes developed by the military (and thus has low shot count, he didn't fight that much in war).
But even if he actually shoot down 130 planes for example, moustache still make a better punchline
6 months later we still only got moustache on this.
A moustache...MadamA moustache...A moustache...Can you test this?Hagiri "Moustachio" MatsuoActual name: Hagiri Matsuo
Aerial victories: 13 planes shot downA Dandy Ace with a marvelous moustacheCarrier Souryuu's pilot with the most experienceThe Intellectual AceHe didn't spend a lot of time in aerial combat, nor did he shoot down a large number of planes, but his ability is the real thing.His combat time was short, because he spent most of his time as a test pilot in Yokosuka, testing new models of planes (Raiden, Shiden, Shiden Kai, etc.)For a pilot with experience in rapid diving*, it is said that their average G-force tolerance is 7 G's. However, the meters inside his plane registered 9.5 G's yet he had no problem.
*e.g. for dive bombing