This how I see it going down, if sanji use IJ from the get go he can't send Jack else where with beef burst & then it will only be him & king and I see sanji beating king mutual it would be a bit harder than zoro did but overall sanji would catch on to his firer mode quicker than zoro & ND king would have to use speed mode most of the fight which would be a bad move on his part lol sanji wins if he gets rid of jack at the start, otherwise he loses