A turret press has 3-4 dies, but only 1 shellholder. The shellholder does not not rotate with the dies. Therefore, 3-4 strokes of the handle is required to load 1 round. The auto-index rotates the dies for you every time you pull the handle however.
A true progressive will completely load one round with every pull of the handle, once the first couple stations have had brass cycle through them. Once every station has brass, one pull = 1 round.