Discussion - Akainu's Ability

Busoshoku Haki granted the user the ability to touch Devil Fruit user's true body but it doesn't cancel out the Devil fruit's effect. So having Busoshoku Haki doesn't meant automatically ownage against Logia users and or having the upper hand against Logia users still because of their Devil

Akainu vs Shanks : r/OnePiecePowerScaling

Sakazuki, One Piece: Game Trilogy Wiki

Character Discussion - Akainu's Portrayal Revisited

Does Luffy lose against Akainu? - Quora

Sakazuki (Akainu), VS Battles Wiki

Akainu's Magma-Magma Fruit Explained - One Piece Discussion

Powers & Abilities - Admirals advanced haki

Why do people claim Akainu is powerful, when he was getting stomped by a sick and dying Whitebeard? - Quora

Current Luffy Vs. Admirals!! (Manga Spoilers) - One Piece Theory

Unpopular opinion: Akainu would do worse at egghead than Kizaru : r/OnePiecePowerScaling

Why was Akainu able to defeat Whitebeard but not Luffy? - Quora

In One Piece, how come Haki didn't effect Admiral Akainu during the War of the best? - Quora

Sakazuki, One Piece Wiki

Is Temuera Morrison Akainu in Live Action One Piece? The Truth