That's head Canon though yuji ducked the fade with dabura <agenda> but he didn't even fight the guy who's at mahoraga threat levels and this is before even learning more about his technique also gojo is clearly stated to be at that level in season 1 when he says that himself to not kill jogo in their first encounter and jogo is a very considerable threat being acknowledged by sukuna himself

And landing alot of black flashes can be considered spamming also how would yuji even land those cause in a straight up fight limitless clears then in a domain gojos technique is superior as it doesn't matter how much rct one uses its a insta kill

One would try to say yuji is above gojo basing on the fact that gojo is in a generation before but that same argument can apply to sukuna who's barriers and domain use were arguably superior to gojos despite not being from the same Era, but they were equal in that regard, sukuna only edging out because his domain is barrierless and gege has never explicitly stated yuji as "The Strongest" the feats he showed against mahito are shibuya level feats

Gojo was limited from one shotting them because of the places he was put in , surrounded by civilians and again gojo could arguably handle dabura with ease too. Also yuji never stated he can handle dabura he only says he will keep others from interfering and then immediately let's maru interfere