Superhero Database

And Quicksilver also has the Godkiller sword, so how does Savitar have superior strength?

How does Spectre destroy WPOTC Laura?
How does Dormammu beat Jubilee?
Black Vortex makes Kitty around, if not above, Skyfather level, so WWHulk isn't beating her.

Individually, Phoenix, Hulk and Superman all have a chance of defeating him, together, he has NO CHANCE.

With Goku's power shook the world of Void, which is Infinite. I'm not saying he would win I'm just saying he definitely has the power to damage him. (I do think in the end Goku would win)

Jack Kirby is better in my opinion.

Spectre destroys white phoenix X-23
Dormammu blinks Jubilee out of existence.
Work War Hulk shit stomps Kitty Pryde, Black vortex doesn't help her.
Galactus beats Rouge even with her power ups.
Silver Surfer defeats Honey Badger as a kid with Mjorlnir isn't Thor.
And Savitar stomps Velocity 9 Quicksilver due to superior Strength.

How's he going to do that? Thor couldn't put Onslaught down.

Is this supposed to be a joke?

Laura vs spectre*
Jubilee vs dormammu*
Kitty* vs hulk
Rogue vs Galactus*
Gabby* vs surfer
Quicksilver^ vs savitar^
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Kitty vs spectre and dormammu*
Quicksilver vs Galactus*
Gabby* vs savitar
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Gabby vs spectre dormammu and Galactus*

White Phoenix Laura^ v. Spectre^
Jubilee* v. Dormammu
Black Vortex* v. World War Hulk
Rogue v. Galactus*
Gabby v. Silver Surfer*
Quicksilver* v. Savitar
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Jubilee* v. Galactus
Black Vortex, Quicksilver v. Silver Surfer*
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Jubilee* v. Silver Surfer