Although the larger ball is more massive than the smaller ball, making the larger ball harder to start or stop, the larger ball is also heavier than the smaller ball, meaning that gravity pulls downward more on the larger ball.
(the larger ball; is; more massive than the smaller ball) (the larger ball; is also; heavier than the smaller ball)
the larger ball the larger ball
is is also
more massive than the smaller ball
heavier than the smaller ball