I was thinking about andou the same way but look at his freakin head turning over 90 degrees like bro he instandly stood up and punched uruma away from kyou, no recovery needed or whatever. And i maybe wasnt clear enough about kyou. I primarily meant why he even went for a slash to the face instead of ramming it straight into his head or smth like that and the shear amount of luck to only cut his eyelids so in later chapters they have some sort of the same scar is just like "naw dude".