User blog comment:CallMeKnuckles/DEATH BATTLE Prediction Blog: Natsu VS Ace/@comment-26194911-20170501030501

Natsu stomps, really. Like there's no way around it.

Even when tossing weird feats around, Natsu is a more experienced brawler, has more options to mess with, and can always just eat Ace easily, ending the battle there. Natsu's scaling and advantages of being a main character is higher than Ace being more of a side character.

Natsu just eats all of Ace's attacks,

Gets stronger with each blow,

Gets faster with each blow,

Transitions into a variety of higher tier Super Forms,

Can hold Ace even if he attempts to escape,

Can totally eat Ace's fire, seeing as he eats different forms of fire all the time,

And will rapidly wear down Ace until he can't even fight anymore, and becomes exhausted. And if he even if Ace tried to flip around, and avoid in fire mode, Natsu can grab fire and hold it like it's nothing.

You could even argue that Ace could control fire inside Natsu once he eats it, but...

No, that's not it at all. Natsu digests the fire almost instantaneously, so there's no like, negative repercussions from that. So ye, that's my bet.

The winner is most certainly Natsu Dragneel