Let's check rings effects,
Lk Bless Ring: Walking speed +15%, Reduce damage taken from Demihumans by 5%, Reduce Vit def by 10%, HP+ 10%, SP+ 20%, Str+ 20, Vit+ 20, Attack 15%, Increase damage done with Bowling Bash 10%
Lk Guardian Ring: Str+ 20, Vit+ 35, Max HP+ 10%, Walking speed+ 15%, Reduce damage taken from Demihumans by 5%, Ingrease damage of Brandish Spear by 50%, Ingrease damage of Spear Boomerang by 50%
Bless ring give 15% Attack and Guardian Ring give damage on Skills (Brandish Spear and Spear Boomerang) that why have almost the same damage.