C+ is a 58??

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For reference here is metacritics flawed scale

4-Star Scale
Their Grade	Converts To
4	100
3.5	88
3	75
2.5	63
2	50
1.5	38
1	25
0.5	12
0	0

Letter Grades
Their Grade	Converts To
A or A+	100
A-	91
B+	83
B	75
B-	67
C+	58
C	50
C-	42
D+	33
D	25
D-	16
F+	8
F or F-	0