who/which plus third-person or not?

Who smoke more, Japanese men or British men? / Who smokes more, Japanese men or British men?
Which has better facilities, Japanese schools or British schools? / Which have better facilities, Japanese schools or British schools?

I always thought "who" as a subject always comes with a third-person verb, but if the answer is "Japanese men do," then
it is plural, so the verb shouldn't have the third-person "s". Am I correct?

Thank you. A Japanese teacher of English