Narrow driver spin loft to transfer more energy
The instructor defines spin loft as the difference between the downward angle of attack and the upward delivery of loft. In the demonstrated change from 2.8 degrees down to 5 degrees up, that window narrows, and the instructor says the ball receives more energy.
Channel: Club Champion
Watch official source at 6:46Why this context matters
The degree change describes the compared deliveries in this fitting example.