The spreadbore tends to make more torque at lower RPM's and provide more top end power per build, not every build responds the same way. Steve Dulich has had a few write ups where he had his TQ out perform the dyno shops Holley.
IMO, a well tuned TQ is a great street strip carb worth looking into.
Remember this carb, the TQ was born and designed to be a race carb before it was redone to be a daily operator for cars.