Akainu stopped WB in his tracks with his hands on his Pockets.
After getting hit with an Enraged Quake on his head he got up and took 1/3 of WB's head.
Got hit with another Earthquake on his ribs, that split MF.
Was back in 1.5 chapters later.
Blitzed Iva and Inazuma.
Put another hole on Jimbei
Hold of Izo, Marco, Vista, Crocodile and other WBP's by himself.
And started to advance and even defeated Curiel.
If Akainu is YC1, then I don't know