This is definitely the best day for the Admirals.
Oda said before: Akainu is so strong that if he was the main character, One Piece would be come to and end in 1 year.
According to the breaking news, Oda will end One Piece in 3 years.
If Akainu had been the main character, One Piece would have ended long ago. But when Luffy becomes the main character, One Piece ends in 2025.
In conclusion,
Marineford Admiral Akainu > Current Joy Boy Nika Luffy
Marineford Admiral Akainu = 2024 Joy Boy Nika Luffy
So how strong is current Fleet Admiral Sakazuki?