>>18922126+2 252 Atk Mega Pinsir Close Combat vs. 252 HP / 232+ Def Skarmory: 171-202 (51.1 - 60.4%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
+2 252 Atk Aerilate Mega Pinsir Return vs. 252 HP / 232+ Def Skarmory: 142-168 (42.5 - 50.2%) -- 39.5% chance to 2HKO after Stealth Rock and Leftovers recovery
+2 252 Atk Mega Pinsir Close Combat vs. 252 HP / 232+ Def Skarmory: 171-202 (51.1 - 60.4%) -- 91.8% chance to 2HKO after Leftovers recovery
+2 252 Atk Aerilate Mega Pinsir Return vs. 252 HP / 232+ Def Skarmory: 142-168 (42.5 - 50.2%) -- guaranteed 3HKO after Leftovers recovery
It's stronger enough to make a difference.