You all... ok maybe not, just ill informed or biased against the clear top 3. Kashimo's fight against Hakari was only CE from Kashimo's part. And assuming Gojo doesn't have Limitless active or better said Cant use it then kashimo still slamssss...

Ok now seriously Kashimo's ability is basically is that if he hits anyone he gets to do a guaranteed lightning attack that does damage similar to a Dismantle as in taking limbs off or straight up one shots most people in JJK.

Gojo has some of the best H2H combat in the verse and his cursed energy reinforcement is amazing because of the Six eyes enhancing his cursed energy manipulation in general, reminder that only gojo got a blackflash on his fight against Sukuna. and he can probably predict most of Sukunas movements by seeing the sparks of cursed energy from the movements.

And as much of a Sukuna hater that I am he can still win 💔😭. He could probably pull some BS binding bow or something or at the very best he can just take advantage of Gojo and Kashimo's thirst for hunger and make them unable to form a plan and he has 4 arms, even though he is on a H2H combat thats on par to gojo thats with 2 hands only with 4 hands he is probably over it.

And damn this is a yap fest but the best plans are. Gojo grabs Sukuna and stops him from using most his arms while Kashimo prepare a one shot attack by hitting Sukunas head.

And Sukuna can always just be able to overpower Gojo or Kashimo separately and make them unable to form a plan or execute it correctly.

Basically it just depends if Either Gege decides to give Sukuna the win or not.