No I stated that two of the MCs said it.
I stated that two of the most stated something on reference to someone else strength. You example was showing me things zoro and luffy wanted to do for themselves which they didn't do. Hence why your argument was flawed.
Infact let me further destroy your argument:
Based on your argument are you trying to say that :
Luffy will not be piratevking because he has had made promises that he didn't keep?
Are you also saying that zoro won't be the world's greatest swordsman because of your examples of promises he didn't keep?
If not then your example also doesn't apply to coby who plans on being an admiral that zoro and luffy stated will be strong.
Hence why your point is flawed
I showed you MCs statement about samurais and beating all yonkous
Your response was - it's not in reference to other people strengths
Then I gave you an example of kiku being called strong by Luffy who defeated kaido
Your response - both zoro and luffy said it
I gave you another example of zoro saying it and trust me that statement on vivi was consigned by luffy because Luffy always believe in his nakamas.
Your response - if MCs statement on Coby isn't true then so luffy won't become PK and Zoro won't become WSS


Oda spammed whole manga with Luffy screaming "I will become PK"
Zoro said numerous times that he will become WSS
And, how many times does these two said coby will become strong - only once and which got paralled with Garp saying Coby is no match for Luffy.
See, Coby will become strong admiral and that's all there is to it. Saying he will overcome the gulf between him and Luffy (as if luffy won't grow) is a reach..big reach