I'm not insecure about Zoro.
I always maintain the stance
Luffy > Zoro > Sanji.
It may fluctuate in distance between the 3 but this is the clear hierarch.
I may troll when Zoro fans trash Luffy for instance when Gear 5 was announced you had Zoro fans saying Joyboy haki/ Joyboy had taken over Luffy etc before it was even released.
Luffy fans generally accept the idea of
Luffy > Zoro > Sanji
Luffy > Zoro > Sanji is bullshit because Luffy and Zoro literally fought as equals when Luffy was blood lusted and going all out and Zoro was holding back.
3 Data books have also said Zoro was equal.
Zoro has been equal to and even stronger than Luffy and Sanji was always tier or two below Zoro.
So to generalize it as Luffy > Zoro > Sanji is not fair because Sanji was never a contender.
Right now Luffy > zoro > sanji makes sense because luffy has gotten 10 power ups and Zoro has gotten one power up advCoC and one nerf Enma