I mean let's take the feats
- Hanami who wasn't trying to kill and holding back against Yuji and Todo tanked 4BF and 1Hit from PC which is strong enough to kill Jogo. Jogo might have the upper hand due to his Curse Technique being fire, capable of burning down trees. The difference between him and Hanami isn't significant overall. Hanami could likely enhance durability further if they tried, but their fight mainly served as a distraction to steal Sukuna's fingers. When hit by the first Black Flash, Hanami's lower body was destroyed, yet later, with reinforcements from Cursed Energy, they endured four more Black Flashes and a direct PC HIT to the head. So, serious Hanami should be able to boost both durability and power with genuine effort.
- On the human side, Naoya's great achievement is damaging weakened Choso with a Cursed tool. He managed to beat up a weakened awakened Maki, with his speed advantage, but got one shoted later. His major feat was blitzing Awakened Maki with a binding vow and keeping up with Kamo, who's semi-grade 1 Sorcerer level. Despite two awakenings, Kamo survived. When not accelerating, Naoya didn't seem to do much against Maki, except for his mach 3 blitz. His best durability feat was tanking a hit from weakened Choso already worn out by the Shibuya Incident.
Overall what I'm saying is Hanami withstood attacks from two Grade 1 Sorcerer level opponents, while even cursed Naoya sustained damage from Semi-grade 1 Sorcerer level attacks. Human Naoya endured hits from Choso, a Grade 1 Sorcerer level, albeit weakened. Considering that only 12 days passed between the Shibuya Incident and Kamo's fight in the Colony, it seems unlikely for Kamo to jump from Semi-grade 1 Sorcerer level to Grade 1 Sorcerer level, surpassing Todo in the process. In Shibuya, Mechamaru clearly labeled him as ineffective, suggesting he was still weaker than Todo. The incident involved only Grade 1 level candidates and actual Grade 1 Sorcerers (excluding assistants), I don't see Kamo's suddenly rising to Grade 1 level out of nowhere without a statement for training or anything.
Cursed Naoya lacks feats for enduring hits from Awakened Maki, considering she lacks Cursed Energy. Physical attacks wouldn't harm him in his Cursed form. Moreover, his human form got one shoted, so that argument doesn't work. Just saying.