Of course, the fact that Dostoevsky can tell a juicy story isn't enough to make him great. If it were, Judith Krantz and John Grisham would be great fiction writers, and by any but the most commercial standards they're not even very good. The main thing that keeps Krantz and Grisham and a lot of other gifted storytellers from being artistically good is that they don't have any talent for (or interest in) characterization-their compelling plots are inhabited by crude and unconvincing stick figures. (In fairness, there are also writers who are good at making complex and fully realized human characters but don't seem able to insert those characters into a believable and interesting plot. Plus others-often among the academic avant garde-who seem expert/interested in neither plot nor character, whose books' movement and appeal depend entirely on rarefied meta-aesthetic agendas.)