Why niji comparasion when both of them fought Page One and the result is clear?
Sanji's powered up 20 RS kick = can't knocked out page one, can't made page one spit blood. Page One was safe and sound like nothing happened.
Luffy single handedly one punch knocked out page one with a gear third that he pull out without even stretching his hand. P1 only come back to his sense after Luffy and Yamato escaped.
One gear third = 20 kick of RS >>> Pre RS Sanji