That's what I have in my notes - it's the highest Str/Agi/Sta/Mag from all the jobs. I believe the next two bytes are any mastered passive abilities from jobs. The code you're looking for is at C2/EBBD. Here are my notes on it (not necessarily correct/complete):
C2/EBBD: 8B PHB
C2/EBBE: 08 PHP
C2/EBBF: E2 20 SEP #$20
C2/EBC1: A9 7E LDA #$7E
C2/EBC3: 48 PHA
C2/EBC4: AB PLB
C2/EBC5: 20 C5 D4 JSR $D4C5
C2/EBC8: 64 E7 STZ $E7 Clear temp vars for stat incs
C2/EBCA: 64 E8 STZ $E8
C2/EBCC: 64 E9 STZ $E9
C2/EBCE: 64 EA STZ $EA
C2/EBD0: A9 D1 LDA #$D1 Save this bank address
C2/EBD2: 85 84 STA $84
C2/EBD4: A9 04 LDA #$04 Number of abilities/loops (one for each ability)
C2/EBD6: 85 85 STA $85
C2/EBD8: A6 80 LDX $80 Character offset
C2/EBDA: BD 16 05 LDA $0516,X Get ability in slot X
C2/EBDD: 48 PHA Push
C2/EBDE: 30 05 BMI $EBE5
C2/EBE0: A0 00 5E LDY #$5E00 Active stat inc offset = D1/5E00
C2/EBE3: 80 03 BRA $EBE8
C2/EBE5: A0 08 63 LDY #$6308 Passive stat inc offset = D1/6308
C2/EBE8: 84 82 STY $82
C2/EBEA: 68 PLA
C2/EBEB: 29 7F AND #$7F
C2/EBED: 20 54 EC JSR $EC54 Load highest stat increases from equipped abils
C2/EC54: DA PHX
C2/EC55: 5A PHY
C2/EC56: 08 PHP
C2/EC57: C2 20 REP #$20
C2/EC59: 29 FF 00 AND #$00FF
C2/EC5C: 0A ASL
C2/EC5D: 0A ASL
C2/EC5E: A8 TAY Offset = Passive * 4
C2/EC5F: E2 20 SEP #$20
C2/EC61: A6 8E LDX $8E
C2/EC63: B7 82 LDA [$82],Y Get stat inc
C2/EC65: D5 E7 CMP $E7,X If > than temp stat inc, replace
C2/EC67: 30 02 BMI $EC6B
C2/EC69: 95 E7 STA $E7,X
C2/EC6B: C8 INY
C2/EC6C: E8 INX
C2/EC6D: E0 04 00 CPX #$0004
C2/EC70: D0 F1 BNE $EC63
C2/EC72: 28 PLP
C2/EC73: 7A PLY
C2/EC74: FA PLX
C2/EC75: 60 RTS
C2/EBF0: E8 INX
C2/EBF1: C6 85 DEC $85
C2/EBF3: D0 E5 BNE $EBDA Loop over all four abilities
C2/EBF5: A0 B0 56 LDY #$56B0 Job base stats offset
C2/EBF8: 84 82 STY $82
C2/EBFA: A9 D1 LDA #$D1 and bank
C2/EBFC: 85 84 STA $84
C2/EBFE: A6 80 LDX $80
C2/EC00: BD 01 05 LDA $0501,X Get character's job
C2/EC03: 29 1F AND #$1F
C2/EC05: C9 14 CMP #$14 if < #14 (ie not mimic/freelancer)
C2/EC07: 30 0F BMI $EC18
C2/EC09: C2 20 REP #$20
C2/EC0B: 8A TXA
C2/EC0C: 18 CLC
C2/EC0D: 69 4A 05 ADC #$054A Get offset + these vars for shit
C2/EC10: 85 82 STA $82
C2/EC12: E2 20 SEP #$20
C2/EC14: 64 84 STZ $84 bank from 00/054A,X
C2/EC16: A9 00 LDA #$00 (use 00 for job)
C2/EC18: 20 54 EC JSR $EC54 Load highest stat increases from job
C2/EC1B: A0 1E 55 LDY #$551E Character stat bonuses added to job bonuses
C2/EC1E: 84 82 STY $82
C2/EC20: A9 D1 LDA #$D1
C2/EC22: 85 84 STA $84
C2/EC24: C2 20 REP #$20
C2/EC26: BD 00 05 LDA $0500,X
C2/EC29: 29 07 00 AND #$0007
C2/EC2C: 0A ASL
C2/EC2D: 0A ASL
C2/EC2E: A8 TAY
C2/EC2F: E2 20 SEP #$20
C2/EC31: A6 8E LDX $8E
C2/EC33: B7 82 LDA [$82],Y
C2/EC35: 18 CLC
C2/EC36: 75 E7 ADC $E7,X
C2/EC38: 95 E7 STA $E7,X
C2/EC3A: C8 INY
C2/EC3B: E8 INX
C2/EC3C: E0 04 00 CPX #$0004
C2/EC3F: D0 F2 BNE $EC33
C2/EC41: A6 8E LDX $8E Load base stats
C2/EC43: A4 80 LDY $80
C2/EC45: B5 E7 LDA $E7,X
C2/EC47: 99 24 05 STA $0524,Y
C2/EC4A: C8 INY
C2/EC4B: E8 INX
C2/EC4C: E0 04 00 CPX #$0004
C2/EC4F: D0 F4 BNE $EC45
C2/EC51: 28 PLP
C2/EC52: AB PLB
C2/EC53: 60 RTS