For me, Tolkien's indeed Classic Epic fantasy. Huge battles, but in the end the parts I love are the Smeagol, Sam and Frodo stuff, slowly walking towards Mordor with an ever growing dread. I've read the books multiple times, the last time was probably about three years ago. I must admit skipping the poetry
Now, Pratchett (for me) started as funny/parody fantasy, and moved into socially satirical fantasy. All the stuff of holding up a mirror to modern life - that's Pratchett. He's the writer who has probably influenced me most in my day-to-day beliefs and thinking. I think I could've done a lot worse
Game of Thrones is political fantasy. Magic's talked about but not really relevant. Martin has the power to surprise - nothing's safe or sacred in his world. I love book one and three. Really, I love them. Never had a book shocked me as much as book one, and it was even more shocking in book three. Two's pretty good, four was - in my opinion - boring. He's got so a lot of characters and viewpoints and book four only had about two that interested me. They might be more interesting retrospectively when the serie's done though. Book five, I've only read once. I quite liked it and am planning a reread later this month when all the furniture's been set up.
Anyway, my point if any: we're comparing Sabertooth tigers, platypuses and chimpansees. They're all mammals but apart from that, not that big an overlap

