It's a good trade-up, but if you love the Fury, don't get hung up on the whole fat tire thing.
If you decide to jump, test ride one first because you're going from a fairly underpowered bike to a monster. The Hammer is not a beginner's bike in my opinion (not saying that you're a beginner), and a HUGE leap from a 1300 Fury.
With a jackpot you get more "bling" and amazing paint schemes. With the Hammer S you get more performance but more of a low-key look. I still want a jackpot to satisfy that need for shiny chrome and wild paint!!
2012 HD Road Glide Custom - Black denim