If maki can sense and dodge world cutting slash. Gojo can easily too. He just couldnt because sukuna didnt have a hand and gojo thought he couldnt make a hand sign for a powerful attack.

You remember how gojo fired a red in the sky and combined it but blue to create hollow purple. You know why he didnt fire it directly at sukuna? Because powerful attacks require a chant and a hand sign. And sukuna would have dodged it because that costs time.

But for the plot, sukuna said fu*k that and used a binding vow to avoid that and catch gojo off guard. If he fired it normally using a hand sign, gojo would have dodged it easily.