Which are correct:
1-He is more guru than teacher.
2-They are more guru than teacher.
3-Thye are more gurus than teachers.
4-He is more teacher than me.
5-They are more teacher than us.
6-They are more teachers than us.
Can't it be used to mean something a bit more than your average teacher?
The man was more brother than teacher, more friend than superior.
I read this sentence from Corpus of Contemporary American English (COCA). Is it ok without an article before the four nouns in blue? And is there any difference between the following sentences:
He's more a friend than a teacher.
He's more of a friend than of a teacher.
Thank you in advance.