Tried 3 Ulli and Byakko last night. Probably I the numbers can give a rough approximate to their VIT:
Ullikumi
My ranged Attack on Ulli either 105, 108 or 111. Didn't see any number other than those 3. But 108 is the number I saw the most. Hence, I'll take that number for this calculation
I was using 59+25 = 84 total STR during normal shot, Sbow(D72), and Demon Arrows(D34). Since the number popped were constants, I can assume pDIF was 1.0
108 = 72 + 34 + fSTR2
fSTR2 = 2 -> ΔSTR = -4 or -5
Ulli VIT = 88 or 89
And its defense should be no less than 387, since eating coeurl sub or not didn't change from me having the same pDIF (1.0)
Byakko
I'm pretty sure all my ranged attack hit for 97 from optimal distance all the time.
Again same setup. STR59+25 = 84 and this time I remember my AGI was 78+21. So archery WSC = 31.
one of My Arching Arrow using demon arrow hit for 447
So working it back with Arching Arrow :
447 = (72+ 34 + 31 + fSTR2)*3.5
127.714... = 72 + 34 + 31 + fSTR2
rounding up 127.714.. to 128
128 = 72 + 34 + 31 + fSTR2
fSTR2 = -9
also from normal ranged attack :
97 = (72 + 34 + fSTR2)
fSTR2 = -9
very close number
Find a respective ΔSTR to fSTR2 = -9 : about -31 or -32 STR
So Byakko VIT : 115 or 116