@PaisaXP Sasuke didn't even really win because of plot armor, he had a Nature Style advantage, Lightning Style over Deidara's Earth Style-based Explosion Style. Not to mention for all of the modifications Deidara applied to his right eye, Sasuke still managed to trick him with Genjutsu, and the Sharingan allowed him to see the microscopic C4 bombs coming at him and counteract it with Chidori. His CM2 state also gave him wings that allowed him to glide and soar through the air to reach Deidara in the sky, which he managed to do twice, even grounding him once at the beginning of the fight. He also absorbed Orochimaru into him before the fight, which granted him accelerated healing, as shown when he got his blown off by Deidara and then it was shown to have been replaced by snakes, and he was able to create a new body for himself like Orochimaru did, but he didn't even do so in that fight. I'd say that Sasuke was granted the win based on the fact he could use a Nature Style that counteracted Deidara's, and the Sharingan allowed him to trick Deidara and see things at microscopic levels, along with his Curse Mark that increased his chakra and physical attributes greatly and allowed him to reach Deidara in the sky.