The strength that disciples of the Blood Skull sect gain in exchange for the lose of their humanity is not even a little bit. It is a total 100% increase.
This boost doubles their power and makes someone like Goldwyn, who had only been at the third mortal coil for 20 years, capable of matching someone that has been at the third mortal coil for at least 42 years in terms of power.
It is only a possibility of matching Elder Calcetti for now. At most, Goldwyn can match those who can mobilize two life seeds at once. If Elder Calcetti can mobilize three or more life seeds at once, then Goldwyn will be outmatched.
However, Goldwyn's advantage will only increase as time goes by. As Goldwyn grows stronger, he will be able to take on much older people who should be more powerful than him.
Then when Goldwyn reaches the ultimate peak of the third mortal coil, he will be able to defeat seniors at the fourth mortal coil. He might even be able to kill them and kill them easily too.
