[Tactics]

Originally Posted by Shadow5YA

That's not what happened. He jumped because the the bridge was clearly going to collapse so he logically moved to a different position and then used the bridge to throw at Sukuna.
The Dismantle afterwards was aimed directly at Gojo but still got deflected because of Infinity.

Gojo saw trace of cut on bridge beforehand.

The next slash is not deflected by Infinity.
Dismantle is cut for things without curse energy so Sukuna is indeed aiming for building.
That's why Gojo surprised on following panel, he expected Sukuna went for his head with Cleave but he Dismantle the building instead for surprise (which Gojo managed to recognize). Moreover if it deflected by Infinity in process then the cut wouldn't be clean just like how smoke from fire extinguisher thrown by Sukuna circling Gojo instead or Choso's Piercing Blood became mess as it interacted with Infinity.

This was directly after his Doman was broken, so he didn't have access to his cursed technique.

Still proven he's wary of Cleave and Dismantle and understand the mechanics behind it.
Otherwise he would just tank Cleave but he's shown advanced carefully enough to ensure his CE not wasted.

Why are you assuming that the size and scale of the Cleave he's using against Kashimo is the same as the one used on Gojo?
Output has always been adjustable for any technique. The only difference is that now it can pierce anything.

And reading the flow of cursed energy wouldn't have told Gojo that Cleave could suddenly pierce his defenses now, only that Sukuna was using the Cleave technique, just like how Sukuna read that Gojo was going to use Red but didn't know it was being used for Purple.

When a human bisected by a cut, would you call it done by a small cut?

Handseal and chant boost output so it being bigger hardly a problem; here we saw Kashimo able to recognize it as World Slash and dodge it boosted. The situation tried to frame it as "You need to be a lightning man to be able to dodge it" but Kashimo able to noticed it World Slash coming to him aligned with CE spark explanation before so idea of Gojo unaware of it and carelessly decide to tank it is weird especially with Rikugan allowed him to preceive CE on extreme details and his experience with emulating teleportation with compressed space. Not to mention it coming from Prime Sukuna instead of heavily injured Sukuna.

Reminder Sukuna aware Gojo is going to use Red prior to Purple nuke just by watching it spark, paying attention to Gojo's flow of cursed energy. How could Gojo unable to notice it while Kashimo can?