I dont think Sukuna will use world slash on Yuta or Yuji.
As you said before, Sukuna will fight the merger. Probably, he is saving it for that fight? As it requires charge up.
As for Yuta vs Sukuna, I want to see if Yuta can keep up with Sukuna's speed. Yuji is FAST, but Sukuna still managed to dodge the sword attack in millisecond.
Yuta or Yuji wont die now, not because they can use RCT, it is because Sukuna's output has decreased (or maybe he is just holding back?). Maybe he can use chants to boost the attack and it can become lethal, but I think Rika will protect Yuta.
One more thing, Sukuna said "try harder", it means we may see Yuta use 5-minutes Rika power up.
I am more hyped about Yuji and Yuta team up. Yuji works well as a duo, as we have already seen; Yuji/Todo vs Mahito.
Yuta is experienced, like who would kiss a curse?
It means he can take calculated risks. Let's see if he can outsmart Sukuna.
Sukuna still wins though.
Mid diff > If Sukuna's output has decreased and he has to use FUGA, and again it depends on how Yuta counter those atatcks
Low diff > If Sukuna does not use FUGA. Keep in mind Sukuna cant use domain expansion now.
Fight will be inconclusive and 50/50 about FUGA.
And tags didnt work
@EmperorKinyagi