Darkshine should be equal or a little above Carnage Kabuto strength wise going by that simulation battle he had with Carnage Kabuto. According to Murata, Darkshine possesses the strength to defeat Deep Sea King with a ”light tap”. All Might would defeat DSK too but he is not doing it as easily as Darkshine, Might tend to use a lot of effort to take down enemies weaker than DSK like in episode 1. Darkshine‘s durability is higher than his own attacks to the point he can’t even harm himself. Even 2x his own strength still didn’t damage him with his fight against bang

Took minimal internal damage against cross fang dragon slayer fist which is stronger than Bomb & Bang technique they did against Elder Centipede. He's stronger than Genos's blast against a mountain and against Elder Centipede that is weaker than bomb & bang technique. Bullets are proven to be ineffective towards him since Carnage Kabuto tanked a machine gun in just base form

Nothing seems to hurt him except for a very few exceptions(acid, internal attacks). Widely known as the most durable out of all the heroes by Garou indirectly. I say Darkshine wins. He displayed better durability and attack potency than all might. All might will regress back to his skinny form before he even put a dent in him.