As a matter of fact, 252+ Trapinch CB EQ does 82.7-97.4% Damage to 252/252 Castform, so either this meta is like Balanced Hackmons where you can invest 252 in each stat, or in order to take that attack Castform has no chance to KO Trapinch, which now has relatively the same bulk, it needs the rosiest of conditions to do so. Now it is true that Modest Life Orb Castform's Hydro Pump or Blizzard can OHKO 252/4 Trapinch (Trapinch doesn't need to invest in anything but Attack and HP really, but lets not get sucked into the world of 252/252 Defensive Calcs. Nothing realistically does that while maintaining its KOs, and if this IS a 252 ALL metagame, then Life Orb Hydro Pump/Blizzard doesn't OHKO 252/252 Trapinch unless it's Raining or Hailing.