[Dakota]

Not nearly as much as in baseball.

the ML Baseball is 25% lighter, less than half the volume, thrown from 30 to 50% farther away (depending on softball level of play),and thrown 1.5 to 2 times faster (depending on pitch selection and softball level of play) than the ASA legal 12" softball.

A bit of pine tar will have a significantly greater effect on the flight of the ball in baseball than in softball.

Maybe it would matter to King Feigner in his heyday, but not to the vast majority of fastpitch pitchers.