One important thing to note is that this is a JoJo fight after all. Giorno has the usual genius level jjba MC intelligence. Giorno will most likely catch Anubis offguard with his reflection and might win that way.
Also idk what the AP difference actually is value wise, but Giorno is said to scale to Bruno who can stagger and lightly harm King Crimson. Same KS one tapped and destroyed Silver Chariot. Basically meaning Giorno should be at least relatively close to Anubis/Polnaref and should be able to damage him with a direct muda barrage
Gio is close to baseline 8-C, scales below Secco. SF can wind King Crimson, but SF itself is 8-C, it's just that he's high enough to catch King Crimson lacking. Which like, yeah, so could Chariot if given the chance, Diavolo himself even says this.
We're talking like the gap between Mike Tyson in his prime and just some boxer. Like yeah the boxer could maybe make Mike wince or daze him for a second if caught off guard type of deal, but Mike would still, ya know, ******* kill him with a blow to the head.
Like let's not forget, GE downscales off SF, who himself barely passes, we see what King Crimson Vs. GE looks like, shit ain't even close.
Unlikey to work since Giorno transmutes inanimate objects which Anubis doesn't qualify as since it's a living sword.
It would work. Anubis is a Stand bound to a sword, the sword has special and enhanced properties, but it's still a sword. But it wouldn't matter really, GE isn't touching Anubis in a way that'd enable him to actually transmutate, he'd just get his hands chopped off.
How is Anubis going to buff itself when its perception is slowed to the point where time looks extremely slow to its host, to the point of delirium?
It wouldn't, at all, ignoring how Gio actually stopped using that post-black sabbath because it nearly got him killed, and thus wouldn't really lead with it at all (Remember, this ability isn't passive, Gio has to manually inject life energy to overload, a quick punch is enough, but he has to choose to do it, in said punch), but, Anubis wouldn't be effected. If he injected life energy into Pol's body, why would that matter? Pol isn't conscious, it would do nothing because it isn't Pol's body that's in control, but Anubis who's puppeting him, but Anubis isn't "in" Pol's body, he's in the sword.
Speed amps don't matter. GE and Gio can barely even react to King Crimson, and I mean that, even with Polnareff, ironically, warning Gio, all Gio could do was barely turn around and begin to defend himself, in the time it took King Crimson to move multiple meters and punch his arm off.
Anubis' speed amps, reactive in nature, he won' get any quicker through the fight because he isn't adapting to any speed, he's already quicker, by quite a bit really.
Gio does have means to win, attack reflection and he just wins, which given his foe is using what seems to be a physical weapon he migght actually be inclined, the problem is, would Anubis even bother hitting the created creature? Remember it can phase, in fact, it even phased through a cow to slash someone on the other end. Giorno might have to trick him into hitting something, which is entirely possible, he could do it, but could he do it before Anubis is up his ass? Because once they get in CQC, Gio dies. As a side note, don't forget Anubis' hosts have superhuman movement speed too, we see with Chaka he moves like a blur.
Anubis Chaka would be way more fair.