LOL. Do yourself a favor and go back and read the fight.
BOTH parties collapsed after their attacks. Luffy fell down a hole. Kata literally fell forward. Then Luffy got up and Kata stood in front of him and collapsed AGAIN. Luffy walked away. 10 minutes, 20, an hour, the next fucking day, who cares how much time as passed? Luffy walked away from the fight, aka he won. Kata even asked him if he'd defeat Big Mom, indicating he won. \
Or is that another level of denial too?