Why the skills have different values on the files? skilldesc.txt skilltable.txt

[Alessio 174]

this is the math inside skilldesc.txt for threewaycut : Total Attack Power %.0f-%.0f (1.1MinATK + (0.1MinATK + 1.5STR)SkillPoint) * 3 (1.1MaxATK + (0.1MaxATK + 1.5STR)SkillPoint) * 3
and this is from skilltable.txt still fro threewaycut : (1.1atk+(0.5atk+1.5str)k) 40+100*k
inside skill_proto.sql the value is the same to the one inside skilltable.txt, should i modify only these two if i want to change the strenght of the skills?