YOU SAID:

be excellent to eachother

INTO JAPANESE

お互いに優秀である

BACK INTO ENGLISH

It is excellent to each other

INTO JAPANESE

お互いに優れている

BACK INTO ENGLISH

They are mutually superior

INTO JAPANESE

彼らは互いに優れている

BACK INTO ENGLISH

They are superior to each other

INTO JAPANESE

彼らは互いに優れている

BACK INTO ENGLISH

They are superior to each other