2. Really? He was in full clad COA vs Law, that was forsure his Full strength.
There is an argument of Sanji not going out. But when they show his leg cracking that hints towards how durable he is.
3. That's a logical argument, im pretty sure Luffy wasnt ever being controlled by doffy, but i can give you that point
10. Skrimishing and going extreme diff... 2 very very different things. Also very 2 sided. Sanji not having an extreme diff fight doesnt give him the chance to get stronger
15. Idk why you're making out Kanjuro's ink arrows to an attack as powerful as a yonkos, which did Damage and not sink ships, (which denjiro did with one slice, etc)
2- Still they fought toe to toe even after injured and the two weren't going all out. That's my only point.
I could give you Vergo is more durable than Sanji but don't forget it's Vergo. Someone who could combine CoA and Tekkai. And Law needed a mountain range slicing attack to deal with his durability(On his 100%). (Honestly not counting Jozu, Big Mom and Kaido no other character that we've seen so far come close to his durability. He's just that impressive.)
On every other aspect though, Sanji had the advantage.
10- True, but he stil tangoed with them(Two characters who're on F6 level.) without losing. And they weren't extreme diiffs, Sanji wasn't even going all out.
15- It's just a point to Sanji's durability. I added it just because but it's still a good durability feat nothing else. And Kanjuro is not a scrub either, he's equal and maybe even stronger to some members of the scabbards who can injure Kaido.