Stat Scaling

This is how I've scaled the stats and stuff, feel free to take a look and give criticisms/advice. I especially need help with the physical stats so ples help, and thank you.

Stats:

10 Points = E-

100 Points = D- . 400 = D . 700 = D+

1000 Points = C- . 4000 = C . 7000 = C+

10,000 Points = B- . 40,000 = B. 70,000 = B+

100,000 Points = A- etc

1,000,000 Points = S- etc

10,000,000 Points = SS- etc

100,000,000 Points = SSS- etc

??? (Revealed later, coz why not)

???

MAGIC STAT:

E = Normal person with magic

D = Normal/Unranked Magic Knight

C = Junior Magic Knight 

B = Intermediate magic knight 

A = Senior magic Knight (Vice-Captain)

S = Grand Magic Knight (Captain)

SS = Wizard King

SSS = ???

PHYSICAL STATS: HELP

E = Normal person 

D = 

C = 

B = 

A = 

S = 

SS = 

SSS =