My dawg, I tried telling this fandom so much... this mf literally smiles everytime when hyping up or thinking about these 3. And people were legit tryna argue that there was no possible way he was above them.
Done called Kaido-BM unprecedented threats, while smiling with confidence. Done called Whitebeard the ruler of the seas, while smiling with confidence.
This man Newgate, the moment Garp steps in, the first thing he does is try to dehype Garp. While this mf still grinning while looking down at him. And that's the fucking grin of confidence in laying an ass whooping when he feels like it.

Newgate/Roger/etc might be more "powerful" individuals, but this dude is the strongest ass whooper of his era.