Except it's possible to become PK while being weak, but you can never be Admiral by being weak.
Yes you can become Admiral despite being weak yourself. You do not need to be the strongest in the marine to become admiral. Fine example is all those who became admiral during Garp's prime.
And its possible in fan-fic.. not in One piece by Oda.
yup
That doesn't affect his progress towards WSS tho.
Then you must not know what "progress" is.
has no sensei.. how does he learn the techniques of the sword? Gets no medical help.. how does he stay alive? Can't navigate... how does he travel the seas?
^^^^^ He requires help in all of those, without getting help, there is no "progress" for him. Anyone who becomes a UFC champion or any sort of a champion, or any sort of "Best at ___" has had help from others.
Roger became PK because he was the leader of the first crew to travel around the world. Never would have happened if Roger had no crew, regardless of how strong he is.
Just like without any crew Whitebeard wouldn't have stood a chance in the GRand line hence no yonko. Shanks wouldn't have stood a chance in the grand line.. hence no yonko title. Kaido /Big mom wouldn't have stood a chance in the grandline , hence no yonko title. But of course you are choosing to ignore all that am I right?
Especially when the most important thing needed to be called an "emperor" is to have multiple territories under yourself.
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You think Mihawk if he wasn't in the warlords would be a Yonko, simply because hes one of the strongest pirates? lol
Never was it said he needed to be, it just helped him greatly.
Never was it said Yonko need personal strength.
If including strength in the intro to who the PK is means you have to be the strongest, then it also means that including wealth in the intro means you have to be the richest.
If including "the most powerful pirates" due to the fact they have multiple territories and have strong as hell people under them, means they are the 4 strongest.. then yes it means that for the PK. As to "acquire everything in the world", requires you yourself to have huge amount of strength.
Also, did WB not also gain fame, wealth and power? Hasn't Shanks? Hasn't Kaido? Hasn't all of the Yonko? Hasn't Doflamingo? Hasn't Teach? I wonder they aren't all the Pirate Kings.
On the level of Roger? No.
You disagree? Well then thats your fight against the manga.