Luffy vs Kaido was the most powerful fight in the wano arc. However, this fight also proves that Gear 5 Luffy may not be the strongest character yet.
Gear 5 Luffy May Not be the Strongest Character in One Piece and His Fight with Kaido Proves it - FandomWire, gear 5 luffy vs kaido
Luffy's Gear 5 Is Actually Stronger In One Piece's Anime Than In The Manga
Luffy's Gear 5 Is Actually Stronger In One Piece's Anime Than In The Manga
The power that made Luffy the strongest One Piece character - Meristation
Gear 5 Luffy May Not be the Strongest Character in One Piece and His Fight with Kaido Proves it - FandomWire, gear 5 luffy vs kaido
Will Luffy still use 'too much Haki' on Gear 5? What do you think? - Quora
What's your thoughts about the Gear 5 episode ?! : r/OnePiece
One piece: Speculating on the role of Luffy's Gear 5 in the Upcoming Story Arcs
Gear 5 Luffy May Not be the Strongest Character in One Piece and His Fight with Kaido Proves it - FandomWire, gear 5 luffy vs kaido