Diamond System Steepness Coefficient

Why there is coefficient of steepness in the diamond system?  

Diamond System 3/8 Table 25-5

Diamond System 3/8 Table Starting 20  

Umbrella System Raymond Ceulemans 35

Mr. 100 Umbrella System Raymond Ceulemans 3 Cushion Billiards Starting 35:  

Raymond Ceulemans Plus System 40

Raymond Ceulemans Plus System 3 Cushion Billiards Starting 40:  

Raymond Ceulemans Plus System 4

Raymond Ceulemans Plus System 3 Cushion Billiards Starting 30:  

Raymond Ceulemans Plus System 30

Raymond Ceulemans Plus System 3 Cushion Billiards Starting 30:  

Raymond Ceulemans Plus System 20

Raymond Ceulemans Plus System 3 Cushion Billiards Starting 20:  

No Effect 1/2 Table System 3

No Effect 1/2 Table System 3 Cushion Billiards:  

No Effect 1/2 Table System 2

No Effect 1/2 Table System 3 Cushion Billiards:  

Long Long No English System 3

Long Long No English System 3 Cushion Billiards: