You can claim with Shakespeare the genre mix influence (Drama is easy, but poetry he goes to Milton, Pope, Byron, Keats... Novels he goes to Austen, Joyce... Short stories he hit Austen, Poe, Henry James...). Maybe an argument can be traced to Milton too.
Anyways, there is 5 big in russia who is just hard to rank... Pushkin, Gogol, Dostoievisky, Tolstoy, Chekhov. But the last 3 are something special. E.M.Foster in the end of the 20's claimed english language had not produced anything as meaningful (novel-wise) as Brothers K, Crime and Punishement, Anna Karenina and War and Peace. He was, like many ignoring Moby Dick, not counting Joyce, but if we look well... It is almost only like adding Flaubert there. And Chekhov is like the guy who solves the two giants problem, he has all they have of good at once. And went to a different path, almost to not have to deal with their size. The 3 made the russian literature a world wide power.
As the previous question, I doubt much. I have been in forums and Dostoievisky is quite pop. But even Tolstoy or Chekhov secundary. Master and Marguerita only mentioned by die-hard readers (not evan that well translated he is, but it is bound to change this year he is public domain) and the other guys? Not even in science fiction sites they were mentioned.
Kat: "JCam, you may quote me now, but you are quite wise".
Kat: "JCam knows, we do not doubt in him".