Dostoevsky vs. Tolstoy, which is greater?

[Rosalba]

I like them both but if it's 'greater', it has to be Tolstoy, although my opinion is based almost entirely on War & Peace.

I've read a lot of Dostoevsky's novels, though - years ago. My passion burned most brightly between the ages of fourteen and twenty-one and I feel rather that I've outgrown him.