Man, just now I noticed this bullshit.
Usually we give shit to Sukuna for asspulls and plot convenience. But it goes both ways.
Gojo suffering less damage is kinda stupid, even if it's his own CE. If it has always worked like that, Ryu would be unfazed by his own Granite Blast. But it knocked him out.
It's obvious that Gege made it at the moment.
It would have been better if both Gojo and Sukuna were almost equally harmed and crippled, low output, burnt out CT, and brain damaged. Then they would have to fight hand-to-hand like Narto and Suske in the final fight, liver punching, kicking and a lot of blood.