First of all, the testimony of four pirates, Charlotte Linlin:
Charlotte Linlin wants to gain the giant's great power through marriage, and then defeat the other four pirates to become the next One Piece. It is not difficult to see from the aunt's words that the great power provided by the giant can defeat Cardo and Redhead, but this power is uncertain for White Beard.
Secondly, Wang Xia's testimony to flamingos in the Seventh Wuhai:
After the defeat, Doflamenco was taken to, during which he talked with Lieutenant General He of the Navy Headquarters. Doflamenco's evaluation of White Beard is: after One Piece Gol D. Roger, he stood in front of the throne and achieved hegemony;
Finally, the testimony of four pirates, Jencks with red hair:
During the period of supernova pirates, Firefighters had a banquet with Jencks with red hair. Ace wants to beat the strongest man in the world, and Jencks with red hair responds with a white beard;
The recognition of white beard by the above three strong men is enough to prove that white beard is stronger than Kado.
White beard is the strongest man in the world, and Cardo is the strongest beast. In fact, the two do not conflict. The reasons are as follows: White Beard is the strongest because it has the power to destroy the world, while Kado is the strongest because of its strong single defense;
At the peak, the white beard crushed the other four emperors, which is the strength of the man closest to the One Piece King. Besides, not to mention the other four emperors, red hair can stop Cardo, while Roger and White Beard are equal in height, but White Beard wants something different. If he fights for one piece, who dares to ask the other four emperors? White beard was recognized as the strongest pirate in the world by One Piece after Roger's death, and was called the strongest man in the world. It is true that he has the power to destroy the world. Judging from the top battle, if White Beard hadn't been stabbed by Scuyard at first, I'm afraid the naval headquarters would have been sunk by White Beard. After all, Scoyard was really pierced all over the body, and most people had already got down.