Because it isn't.
Kizaru had already sensed Saturn's aura, heard his voice why would he comment on his presence after taking a punch?
Luffy also has no reaction for him being there (after hitting Kizaru) whatsoever.
Kizaru had already sensed Saturn's aura, heard his voice why would he comment on his presence after taking a punch?
Luffy also has no reaction for him being there (after hitting Kizaru) whatsoever.
Also, Kizaru casually talks about Luffy's form limitations right before getting punched. Does this sound like words coming from someone who has already lost lol?