The matchup problem isn’t really a temperature thing Akainu said magma consumes fire not that’s it’s necessarily hotter, in their clash the magma basically smothered the flames to a point where even Ace could get burned from the attack. Plus idk how Sabo awakens his fruit in this short amount of time. Also Akainu should have awakening too, so if the flame fruit gets superior through awakening wouldnt Akainu just bring things back to square one when he activates his awakening? Not even sure if logia awakening is going to be a temperature increase thing anyway.