Could you explain how that can OHKO a pretty bulky def. pokemon with 1 nve physical attack move?
252+ Atk Metagross Meteor Mash vs. 0 HP / 0 Def Swampert on a critical hit: 135-160 (39.5 - 46.9%) -- guaranteed 3HKO
pretty sure mega evolving wont make you 3 times stronger... and that was a crit too...
+1 252+ Atk Tough Claws Metagross Meteor Mash vs. 252 HP / 252+ Def Swampert on a critical hit: 191-225 (47.2 - 55.6%) -- 21.5% chance to 2HKO after Leftovers recovery
(191, 193, 195, 198, 200, 202, 204, 207, 209, 211, 213, 216, 218, 220, 222, 225)
Remove the leftovers and add tough claws and, buddy, you've got a bopped Swampert
At least, if we're talkin about crits