How do you prefer to ride? Would you rather sit back and cruise, or... do whatever it is you do on a sportbike?
Personally, if I ride a sportbike, I have the urge to use the potential of the bike, like the 13k RPM redline. Put me on my Sporty and I tend to lug it and cruise most of the time. Maybe it is because sportbikes sound like crap unless you are winding them? I don't know, but there is a much less chance that I will spend any time in the courtrooms by invitation of the local police while on a Harley.