Changing the spin rate with the same swing speed has a huge impact on the distance the ball travels. Too much backspin for the ball speed and the ball will have too much lift and balloon. Too little spin and the ball doesn’t have enough lift and dies quickly. (Read The Magnus effect and Bernoulli's principle if you want more physics).

The laws of physics (proven with the data from hundreds of thousands of golf swings) means that those with slower swing speeds generally benefit from a higher launch angle and more spin, than someone with more aggressive swing speeds.