On hindsight I didn't really get that lucky, sure i'll admit I played it awfully but luck itself wasn't heavily tilted in my favour...
Getting a 2hko on clef for example is a 2% chance to 2hko.
252 SpA Life Orb Latios Psyshock vs. 252 HP / 172 Def Clefable: 179-212 (45.4 - 53.8%) -- 2% chance...