There is explanation:
GL - Str / x + agi / y <- Basic damage. X means - main stat. Y - secondary stat.
Magic pin - agility <- Besides of basic damage, what stat more increase the power of this skill
Shining peak - Strenght > Agility <- This skill use two more stats. Here is meaning, that Str is more important than Agility.
But for real, by security reason we can't provide exactly digits.
I know, that there can be some problems with some buffs, so please write me to the PM all information
1) Your stats
2) Skills, which working fine and which not
3) Your damage (crit or exc) and name of moobs
I will test it and can say, is this bug or not