Quote Originally Posted by Archangel
Not really, it's a matter of temperature with Ace's red flame being nothing more than an incomplete combustion while most magmas are in the range 700°C to 1300°C

Basically the magma overtakes the fire which translates as damage in Logia terms
I think people have actually asked the science section on 4chan, and they said that lava traps oxygen or something.....I wasn't there for the actual explanation, but according to them it makes sense that lava beats fire. Who knew.