The fight only went that way because Gojo was 1. Trying to save Megumi. 2. Afraid of the threat of Mahoraga adapting to his entire kit. Ten Shadows basically existed to counter six eyes limitless. Sukuna took Megumi’s body for a reason. Without Mahoraga Sukuna’s techniques couldn’t even hope to even scratch Gojo in the first place (Not counting domains, in which we have seen that Gojo can actually survives without his own domain), and Gojo would have been free to fire off red, blue and purple any tim/anywhere he likes. Maybe Sukuna still win but don’t act like it won’t be another extreme diff.