For Ohnoki, a fiercely powerful Raikage was not actually a threat, because the man was essentially a brute with a brain full of muscles. What good was sheer strength? Had not the Third Raikage ultimately been buried by a sea of enemies?
However, a Raikage who possessed both brains and might would pose a far greater threat to Iwagakure.
The Fourth Raikage, A, naturally lacked the subtlety for clever sarcasm toward Ohnoki. Having merely heard that Iwagakure had lost a Tailed Beast, he had intended to write a direct, mocking letter.
Chapter 182