Sukuna going all out against Maki doesn't mean much when he was heavily nerfed from his fight with Yuta. Just because he isn't holding back doesn't mean he is stronger than before, if anything he is way weaker than he was prior to his fight with Yuta and Yuji.
Maki didn't eat that black flash, she was literally out of the fight for 2 chapters and only joined at the very end of this one, moreover it isn't like she is gonna throw hands alone against Sukuna, she is getting help from Yuji (who can still nerf Sukuna again), Miguel (another of those "Gojo level" characters we keep getting lmao), Choso and probably Laure if he survives that BF.
I'm not denying that she is a beast or that she is strong as hell, I'm just stating the facts and the facts here show that Maki isn't on the level you think she is.