Pros and Cons-
Pros: higher accuracy, STAB, Blaziken's attack is higher.
Cons: not as strong as Focus Blast.
Pros: way stronger, STAB.
not as accurate, MY (nature) Blaziken's special attack isn't as good.
They're both kinda even! PP isn't a concern because I have 20+ PP ups. Which one is better though? I'm kind of leaning toward sky uppercut.... but they're close. The huge power advantage makes me like Focus Blast though.