상디에 대한 강함 언급.. 없다.. 나미에 대한 왼팔 언급.. 있다..

She is one of the triggers of one piece alongside Zoro and Luffy.
She is the one that usually brings balance to Zoro and Luffy's antics and usually brings a different perspective from that of Zoro and Luffy. Case in point:

• During the fight between Zoro and Luffy
• During the fight between Bellamy's group and Luffy/Zoro
• During the fight between Luffy and Usopp and Zoro refusing Usopp to rejoin without an apology whereas she was on the other side

If left hand = knowledge then Nami fits more with the left hand as she is the one that does most of the captain's job when it comes to the day to day running of the ship. Luffy and Zoro don't do much outside on crisis situations.

근데 샹크스 해가사 같은 거라서 무시해도 될듯.

왼팔이 지식을 전제로 하면.. 이런 느낌이네ㅋㅋ

because there was no mention of Sanji’s strength giving him some unique position among the crew like being Luffy’s left hand (which the argument before was based purely on strength), we now have to change the scope of the argument to 

상디에 대한 강함언급... 어디에도 없단다