[2.1] petit's Witch Summoner Support / Carry IN-DEPTH STYGIAN REVENANTS Quad+ CURSE

My 6L for Stygian Revenants are Spectre-Minion Damage-Controlled Destruction-Lightning Penetration-Spell Echo-Chain/Slower Projectile.

But in the guide Spectre-Minion Damage-Lightning Penetration-Spell Echo-Slower Projectiles-Chain
was it far more better damage wise?

I'm quite new to summoners and I don't know where you get these calculations

dunno about the rest but isnt elemental focus a straight upgrade over controlled dest?