Most of the asterisks in this fight are in support of Kizaru's performance tho...
He was not in it emotionally and was dealing with internal struggles. He was constantly distracted by the need to pursue his mission. He was explicitely told to not cause damage to the facilities.
So despite Kizaru going into the fight with flimsy conviction, with his destructive power and attack scale restrained by the needs of his mission and with said mission being the priority leading to him not keeping his focus on Luffy and giving up on opportunities to press him, he still overwhelmed Snakeman and fought off G5 until its stamina limit (by Luffy's own admission).
The one attack Luffy managed to cleanly land before running out wasn't even enough to secure him a draw since Kizaru was up and blitzing everyone around moments later. Heck by the end of the arc, he is shown with no lasting injuries and clearly more concerned about the death of his friend than anything else.
He was not in it emotionally and was dealing with internal struggles. He was constantly distracted by the need to pursue his mission. He was explicitely told to not cause damage to the facilities.
So despite Kizaru going into the fight with flimsy conviction, with his destructive power and attack scale restrained by the needs of his mission and with said mission being the priority leading to him not keeping his focus on Luffy and giving up on opportunities to press him, he still overwhelmed Snakeman and fought off G5 until its stamina limit (by Luffy's own admission).
The one attack Luffy managed to cleanly land before running out wasn't even enough to secure him a draw since Kizaru was up and blitzing everyone around moments later. Heck by the end of the arc, he is shown with no lasting injuries and clearly more concerned about the death of his friend than anything else.
