Name: Boa Hancock
Occupation: Pirate, Shichibukai
Crew: Kuja Pirates
Status: Captain
Age: 29
Devil Fruit: Mero Mero no Mi(Paramecia)
Haki: Armament(confirmed) + Conqueror(confirmed, but unseen) + Likely, but unconfirmed Observation
Special Attributes: High physical strength, Fast, Kicking-based fighting style, Has a pet snake named Salome that can help in battle.
vs
Name: Sentomaru
Occupation: Bodyguard of Vegapunk, Marine Science unit leader, Pacifista Commander
Crew: Marine
Status: Active
Age: Unknown
Devil Fruit: None
Haki: Armament (confirmed) + Likely, but unconfirmed Observation
Special Attributes: Uses a giant broadaxe, Very smart, Fast, Far-range Haki attack.
Time: Pre Timeskip
Scenario: Their 1on1 fight at Marineford would have continued. What do you think would have happened and why?