Depends, in some instances they are quicker and in some they're not.

Upto say 60-70 MPH they''ll be quicker as the torque they deliver is instant and they're shortgeared but after that the longs legs of the supersport will enable it to catch up and eventually pass...having said that there are SM's that keep up uptill 100 MPH! All depends on power, gearing and riderabillity.

In slow/tight and medium corners the SM will be much quicker! Even on track it's pretty easy to keep up with supersports or overtake them as you can ride the most ridiculous lines with an SM.
It weighs 115 Kg's and is equiped with a stupendous brake so you tend to brake much much later than a supersport.

Ridingstyle is very different though, comes down to bodypositioning.
Instead of leaning over with the bike I tend to stay upright over the centre of gravity of the bike and push the bike away from me while cornering.
Also, you need to move around on the seat a lot to be able to lean the bike over far enough whilst staying upright yourself.