Re: ~SPOILERS~ Big Mom Pirates
I like this type of argument when it says : " If X Pirate isn't strong, he would've been taken out by Y pirate ".
That's implying that actually Teach or Kaido or any other pirate wants to bring her down.
As for the " definitely " from my part, I'm sorry, that's just what I felt from here, she's absolutely not in the league of Shanks and WB. There's absolutely no way that someone like her is as strong as these two, I have and will never have any evidence to back up my claim unless Oda shows us a fight opposing these characters, but I know when a character is stronger than another, especially since Oda's style makes it easy to spot it.
The feeling, I wouldn't say intimidation, that WB and Shanks gave were truly something else, I could easily say they're STRONG. Or more precisely, they're at the TOP. They way Oda draws them, they give a vibe different from any character, the only characters so far from whom I felt such a vibe are WB/Shanks/Mihawk/The admirals. The first time I saw them, I was like " Damn, these guys must be top tier ". Crocodile, Doflamingo, Kuma do give such a vibe too, but not to the extent of those six.
It is all from the introduction, and Oda do put an emphasis on that, heck we can even judge the strenght of a character coming from the introduction.
We have not seen Buggy fight when he encountered Luffy first, but I knew he was weak, same with Mr.3, Foxy...
That's why, I say that she's not at the level of WB/Shanks, but BB or Kaido not sure, I still have mixed feeling towards BB as a character.