>>31153756FS Phero can't 1HKO Koko and Lele (on lele's case they mostly run scarf so it doesn't really matter
FS Pheromosa :
252+ Atk Pheromosa Poison Jab vs. 4 HP / 0 Def Tapu Koko: 228-270 (80.8 - 95.7%) -- guaranteed 2HKO
252+ Atk Pheromosa Poison Jab vs. 0 HP / 4 Def Tapu Lele: 252-298 (89.6 - 106%) -- 37.5% chance to OHKO
LO Phero :
252+ Atk Life Orb Pheromosa Poison Jab vs. 4 HP / 0 Def Tapu Koko: 296-351 (104.9 - 124.4%) -- guaranteed OHKO
252+ Atk Life Orb Pheromosa Poison Jab vs. 0 HP / 4 Def Tapu Lele: 328-387 (116.7 - 137.7%) -- guaranteed OHKO