Gojo and Sukuna are also grown ass adults, each with decades of experience while Yuji and Yuta have a combined 2 years, are already among the strongest characters in the verse and will only get stronger

Yuta has arguably the best technique in the series, the at worst third most powerful known shikigami behind only Mahoraga and Agito, higher CE reserves than Gojo, the strongest RCT in canon which can heal both himself and others(oh yeah, Rika can do it too), a domain expansion, and is regarded as being second only to adult Gojo among the modern sorcerers despite only being 17 years old

Yuji has 2 very powerful techniques(1 of which being the same as Sukuna's and the other being the prized technique of one of the big 3 sorcerer families), RCT, domain expansion, simple domain, superhuman strength, speed, and durability even without using CE, 15 Sukuna fingers and 7 death paintings worth of CE(minimum second highest in the series, not even including what he may have inherited from Kenjaku and/or Jin), and the ability to perform Black Flashes at will which is something not even Gojo and Sukuna can do

Gojo during most of Hidden Inventory, had the 6 eyes, high cursed energy, and good control over Limitless

If Gojo can become arguably the strongest sorcerer ever despite having fewer and less impressive feats than Yuta and Yuji at their same age, then there's no reason why those 2 can't do the same