User blog comment:CallMeKnuckles/DEATH BATTLE Prediction Blog: Natsu VS Ace/@comment-26417457-20170423141910

At first, both seem to be equal in DC and Durability. However Natsu is faster. Ace is like Mach 271, Natsu's over Mach 1382. So he's 5 times faster. And Natsu can eat Ace's fire and become stronger than Ace. Both should be immune to fire but Natsu will become so stronger, he doesn't even need the fire to win. And Natsu has a lot of forms. So IMO he wins.