[quote=@LokiLeo789]
<Snipped quote by Hillan>

Man, Luffy fought for like, a whole day on Marineford, and against CP9, before the time skip. Xerxes fighting style focuses on minimizing fatigue also, he will need days to rest, but he can still preform.
[/quote]

You said he was almost out of energy in your last post, and you're also conveniently ignoring that Luffy had Iva's hormone help several times through Impel Down and Marineford. There's also no real narrative reason to keep the fight going: everyone else on the crew is down, Ira's cool with the jailbreak plot, and Xerxes has proven consistently helpless against a Logia type. All pulling out the stops has done is pissed John off. I don't get hiw dragging it out further is good for anything.