and griffon and facet +% lite dmg is actually strong on trapsin (unlike lite sorc) due to skills not giving +% lightning dmg (unlike lightning mastery) and + % lighting actually adds a lot of dmg?
Its strong on trap because:
SorcLightSkillBaseDamage * (1+((Synergies%+Mastery%+Equipment%)/100))
Meanwhile on trapsin:
TrapSkillBaseDamage * (1+((Synergies%+Equipment%)/100))
So when sorc has a light mastery with 500-600% light damage, as well as like 400-500% synergies bonus. Well then those 15% from griffon would make: 1200% go to 1215%. So little change.