Battle of the loving Big Brothers-Portgas D. Ace vs Itachi Uchiha

Regulations: 
 
Round One- 
-Both are alive and in Full Health
-Morals on 
-Fight to K.o or incapacitation 
-Random Encounter  
-Itachi has ten shuriken, ten kunai, five smoke bombs. 
-Ace has his fiery personality 
-Fighters start off 50 feet apart
-Location below 
-GENJUTSU IS OFF. 
 
Location:  

Itachi wins both rounds. Ace's fire hasn't shown the capability to break through Itachi's Susano'o, and he openly relied on his logia's power too much. He'd get smacked with the illusion sword and have his soul sealed.

Ace was a Commander of Whitebeard, so he most certainly had Haki, and the only reason he didn't use it was PIS. Ace could fight Jimbei for days, who was basically hes anticlass. Before Ace got the fruit he was already a supernova, and Luffy could never defeat him even with a paramecia fruit made for H2H combat. Hes flame spear pearced Blackbeard. Hes strongest attack is at least island buster And hes indestructible for Itachi. Also his will power is second to none, so genjutsu him isn't that easy.

Island buster feat, please. Having haki wouldn't defend his soul from getting sealed. Itachi, not holding back, would reflect his fire with the mirror. There's nothing in Ace's aresnal that competes with Susano'o.

so, having soul sealing in a Naruto means One Piece verse can't defend against it? Please. Haki in One Piece can defend someone from the most crazy effects of fruits. Just because Susanoo is impenetrable in Naruto verse, doesn't qualify the same for One Piece verse.

Itachi.

Itachi alive can't take the strain of MS, so he's susanoo inferior to Sasukes. Only after as undead could he freely use amaterasu combined susanoo. Alive Itachi have poor showing, only genjutsu and flame jutsus. Ace immune to fire, and genjutsu is out of picture for the first round. He's best jutsu is Susanoo that made up of normal fire. Crocodile could control sand that wasn't made from hes body so can Ace. The only thing Itachi has is speed, but since Ace intangible, that's hardly an option. Round two is a close fight, but Ace has a strong mind so i give it to him 6/10 Also Ace can fly and have bigger stamina than Itachi