Originally Posted by Typhlosion Explosion
Mmhm, no, Ice Ball/Rollout aren't the most powerful. Generation IV Explosion is, on Lickilicky/Smeargle with Silk Scarf/Life Orb/Choice Band. 250*2 from STAB = 500*2 from item = 1000 BP, 40 more than Ice Ball or Rollout. If you factor in Critical hits, it does 2000 BP.
What if Spheal is holding NeverMeltIce or glacier plate? Also please stop talking about critical hits and such, those are nearly travial factor because they can not be used in a 'real' strategy, even though there critical hit ratio boosting moves and items, they are still very luck based, and a strategy based on critical hits will therefore be very unreliable.