The way I see it is, roll races show you if your car is faster then another car with little to no driver error. Its more of a way to compare and see how your car holds up. Races from a dig have a lot to do with the driver and his skill.
Unfortunately I'm part of the no shift category now. This clutch feel is NOTHING like the older clutches I've had.. Super light to me. I've had the car two weeks so I still have some time to get used to it I guess.