slope and how its worked out and comp to SSS

As said Slope is simply an indication of the relative difficulty of a particular course (ie set of tees) for a bogey player (20 ish handicap) as opposed to a scratch player.

When a course (ie set of tees) is rated, two sets of measurements and positions of obstacles are taken into account.
The first are for a 'model' scratch player, which after calculations produces the Course Rating (almost equivalent to SSS). The second for a 'model' bogey player. The Bogey Rating.
Neither figure is related to par but simply indicates how many strokes that type of player is expected to take from those tees.
A theoretical line is drawn on a graph between the two ratings and this is the Slope.
A player will have a 'base' handicap index (derived from the average of the best 8 of the last 20 rounds) and will convert that to his Course Handicap by using the slope.

The first course is more difficult than the second for a scratch player. CR of 74 v CR of 72

The second course is 'relatively' slightly more difficult for a higher capper vs a scratch player (Slope 139) player than the first (Slope 137)

NB Par is irrelevant in this context