Whitebeard's final attack at MF literally split the island, it was fueled by the rage of the death of a "son" (Whitebeard's entire character is about wanting a family), it was the last hurrah of a living legend. It puts Advanced Conqueror attacks to shame, the fact that Akainu took it and continued going like that is scary.
Kaido was almost out from Oden's last move.