Not a big fan of the looks either, but I'm not you:thumbup:.
As for grunt and handling, the downside to having a naked bike, with nearly the power of a Busa is that once you really get it hummin' you'll notice that a naked bike isn't the best choice of bike for high speed riding.
The wheel base (longer than the Busa), and the fork angle will probably help keep it from losing stability at high speed which is more of a problem for the nakeds, since they've got everything on the front hanging off the bars, instead of mounted to the frame meaning any fluctuations in the air hitting the front of the bike are transmitted straight to the bars...lol...No screen to hide behind either.
They might feel nimble for their size but they still won't be flickable like an FZ in the tight stuff.
The fuel tank is much smaller than the Busa I believe (16.4?L/4.3 Gal?) but it uses fuel at the same rate, so fuel range will be down a bit too.
But after all is said and done, if you like the look, and want the grunt, see if you can score a decent test ride. You'll find out more in half an hour on the bike than you will listening to me gab on for a year:BLAA:....lol.