Which will be faster???

That's a tough bench race to call. I'd think that the nitrous car would probably 60ft a little better, and the blower car might MPH slightly more.
 
Nitrous should make more torque.

It depends on the supercharger, as said. If it's a centri, I'd give it to the nitrous. Positive displacement, and it all comes down to traction and when you start to spray.