Please tell me you don't think Sanji's flames are hotter than King's or Sanji is stronger than King?
Long version: i dont think Sanji's flames are hotter than King. I think Oda obscures it. If i wanna nitpick, i can wanked it Sanji's way ("omg King's fire doesnt even emit lightning so Sanji is hotter due to real life physics")
And i can wank it in King's way ("omg King's fire is like magma which can melt Jimbei's body while Sanji merely grilled Queen's skin")
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So do i think Sanji's flames are hotter than King?
Short answer:
...no.
Serious note: Zoro is still > Sanji in overall PL of course imo, but i do think that Sanji is always faster.
Regarding which flames are hotter, I just want balanced sides between Zoro vs Sanji, Zoro faction members are way too dominant in numbers and way too active in trolling, see how
@PuckTheGreat participates in powerlevel debates even ho he's a narrative-heavy member? Thats how much he's annoyed by Sword Faction