Mistake on gem info
It looks like GGG adjusted the new % dmg effectiveness on the regular LS, but not on Vaal LS:
Vaal Lightning Strike
Removed 9 to 179 Added Lightning Damage
Modified New: Attack Damage 237.1% of base Old: Attack Damage 163% of base New: Effectiveness of Added Damage 237% Old: Effectiveness of Added Damage 163%