Would Usyk have won if he fought Chisora, AJ, Fury and DD in a "fire for fire" style?

No

Usyk made a lot of adaptations at heavyweight

 

He fought Joyce like that and did well. He's certainly capable of it, but far too smart.

Could Mayweather have stood toe to toe with a lot of guys and still won? Yes.

 

no. basically thats a phone booth fight and id take David Tua to whoop him a 100/100 if that were the case, but we all know Usyk would beat Tua any day of the week.

The only one you mentioned that Usyk may beat if he went toe to the the whole time is Fury

 

Usyk wouldn't get knocked down by single punches from Pakjic & Cunningham.

 

Usyk came forward on Fury all through the first fight. I’d argue if he fought fury at range in the first fight, he may have lost. The rounds of fury one were the ones fought at the end of his jab.

in both Joshua fights he took it to him and with stood a barrage later in the fight and came back to hurt Joshua

Sure Usyk never just stood and traded, he’s too sophisticated for that but I’d argue he was the aggressor in those fights

 

Usyk took single hard punches from Joshua in their 2nd fight.

Joshua in terms of power is up there with Wilder and he hits harder than Wilder with the left hand.

Fury has been floored 8 times he's never had a great chin it's his recovery powers that are good.

 

Additionally, why fight to your opponents strengths? Having slug fests against bigger men almost never works out, or in the rare cases where it would work you take far too much damage from it.

 

I think so. His feet, defense and coordination would allow him to land more big shots than they'd land on him. Look at the last sequence in the Dubois rematch. Dubois tries to catch him coming in with a big right similar to how he did Joshua, But Usyk is too aware and fast, he slips it and comes back with a left as Dubois is in the midst of throwing a left of his own. Those kinds of exchanges would be constantly happening in a fire fight and Usyk basically already showed that he would probably win them. The second Fury fight aswell had plenty of moments where Usyk would win the exchanges because of his superior coordination and speed.

Now if he genuinely put all his skill aside and just stood and traded with them without defending himself, then no he probably wouldn't win lol. But in a Holyfield Bowe kind of fight with constant high danger fast paced exchanges requiring fast paced thinking, Usyk would come out on top despite his size and power disadvantage because as he's already shown, he can think and react at a faster rate than they can.