Fair.
All I’ll say I that I think 1 month prep Sukuna wins no matter if it’s Heian or modern variant.
True, honestly I think Sukuna’s selfishness is his greatest weapon. “Only his pleasure and displeasure exists.”
Lowkey the power system itself seems to be the main antagonist
Yes. His selfishness and his constant pursuit of evolution and consumption is why he is who he is.
And if you pay attention, the story constantly reinforces Sukuna's ideals as being correct:
Megumi awakens his domain expansion after becoming more selfish
Gojo has his greatest victory by casting away human connection, in the one instance his nature actually resembles Sukuna's.
Yuta clutches up a 3v1 the one time he decides to fight selfishly
Contrast that even further...
Yuki bought into Tengen's plan and didn't try to fight Kenjaku with her own domain ->Got packed up.
Yuji fights with a cog mentality, for basically everyone other than himself -> Gets dicked down by the story nonstop
Gojo didn't have a real sense of self, and didn't dispose of Geto's body ->Got locked up.
Gojo didn't fight just to affirm his position as the strongest, but to save Megumi too ->Got him killed
In fact, Sukuna only fought Gojo to further his own mastery of Jujutsu, to evolve yet again. He never fought to affirm his position as the strongest, because that would've never even been in question for him.
The biggest difference between Sukuna and Gojo is that Sukuna CHOSE this loneliness, this strength, while Gojo had it forced upon him