Yes, that's the point, Steel is running around with 3, potentially more broken mons all of which are really good on their own right, and all of which can beat entire types on preview unless you massively outplay.
252+ Atk Jynx Crunch vs. 252 HP / 252+ Def Slowbro: 156-184 (39.5 - 46.7%) -- guaranteed 3HKO
252+ Atk Life Orb Jynx Crunch vs. 252 HP / 252+ Def Slowbro: 203-239 (51.5 - 60.6%) -- 91.4% chance to 2HKO after Leftovers recovery
So it needs a decent amount of chip or LO to 2hko Slowbro, so you can easily switch bro and then Teleport out to Victini which OHKOes without problem (And Crunch is bad outside of just hitting Slowbro / Psychic since most Ghosts are hit harder just with STAB and is weaker that HHP/Zen Headbutt vs Aegislash/Jelicent).
And even if you were to run Jynx no i am not saying its viable in anyway why wouldn't you go the BoltBeam route, you could try like Kyurem-B maybe?